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Finding the Fourth Proportional to 603,640,848.20, 905,461,272.30 and 603,640,848.20

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Solution

The fourth proportional to 603,640,848.20, 905,461,272.30 and 603,640,848.20 is: 905,461,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,640,848.20 : 905,461,272.30 = 603,640,848.20 : x
  2. Step 2: Convert to fraction form
    603,640,848.20/905,461,272.30 = 603,640,848.20/x
  3. Step 3: Cross multiply
    603,640,848.20x = 905,461,272.30 × 603,640,848.20
  4. Step 4: Simplify right side
    603,640,848.20x = 546,573,410,423,423,168
  5. Step 5: Solve for x
    x = 546,573,410,423,423,168/603,640,848.20
  6. Step 6: Final answer
    x = 905,461,272.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.