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Finding the Fourth Proportional to 651,796.20, 977,694.30 and 402,964.20

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Solution

The fourth proportional to 651,796.20, 977,694.30 and 402,964.20 is: 604,446.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,796.20 : 977,694.30 = 402,964.20 : x
  2. Step 2: Convert to fraction form
    651,796.20/977,694.30 = 402,964.20/x
  3. Step 3: Cross multiply
    651,796.20x = 977,694.30 × 402,964.20
  4. Step 4: Simplify right side
    651,796.20x = 393,975,801,444.06
  5. Step 5: Solve for x
    x = 393,975,801,444.06/651,796.20
  6. Step 6: Final answer
    x = 604,446.30

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Half scale
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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.