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Finding the Fourth Proportional to 156,683.97, 235,344.29 and 138,378.78

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Solution

The fourth proportional to 156,683.97, 235,344.29 and 138,378.78 is: 207,849.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,683.97 : 235,344.29 = 138,378.78 : x
  2. Step 2: Convert to fraction form
    156,683.97/235,344.29 = 138,378.78/x
  3. Step 3: Cross multiply
    156,683.97x = 235,344.29 × 138,378.78
  4. Step 4: Simplify right side
    156,683.97x = 32,566,655,038.27
  5. Step 5: Solve for x
    x = 32,566,655,038.27/156,683.97
  6. Step 6: Final answer
    x = 207,849.31

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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.