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Finding the Fourth Proportional to 157,153.54, 216,876.52 and 85,538.20

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Solution

The fourth proportional to 157,153.54, 216,876.52 and 85,538.20 is: 118,045.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,153.54 : 216,876.52 = 85,538.20 : x
  2. Step 2: Convert to fraction form
    157,153.54/216,876.52 = 85,538.20/x
  3. Step 3: Cross multiply
    157,153.54x = 216,876.52 × 85,538.20
  4. Step 4: Simplify right side
    157,153.54x = 18,551,227,143.06
  5. Step 5: Solve for x
    x = 18,551,227,143.06/157,153.54
  6. Step 6: Final answer
    x = 118,045.24

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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.