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Finding the Fourth Proportional to 156,884.68, 216,502.54 and 85,264.70

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Solution

The fourth proportional to 156,884.68, 216,502.54 and 85,264.70 is: 117,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,884.68 : 216,502.54 = 85,264.70 : x
  2. Step 2: Convert to fraction form
    156,884.68/216,502.54 = 85,264.70/x
  3. Step 3: Cross multiply
    156,884.68x = 216,502.54 × 85,264.70
  4. Step 4: Simplify right side
    156,884.68x = 18,460,024,122.34
  5. Step 5: Solve for x
    x = 18,460,024,122.34/156,884.68
  6. Step 6: Final answer
    x = 117,666.20

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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.