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Finding the Fourth Proportional to 153,558.39, 211,910.78 and 85,573.88

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Solution

The fourth proportional to 153,558.39, 211,910.78 and 85,573.88 is: 118,092.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,558.39 : 211,910.78 = 85,573.88 : x
  2. Step 2: Convert to fraction form
    153,558.39/211,910.78 = 85,573.88/x
  3. Step 3: Cross multiply
    153,558.39x = 211,910.78 × 85,573.88
  4. Step 4: Simplify right side
    153,558.39x = 18,134,026,812.81
  5. Step 5: Solve for x
    x = 18,134,026,812.81/153,558.39
  6. Step 6: Final answer
    x = 118,092.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.