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Finding the Fourth Proportional to 156,806.80, 216,411.92 and 93,144.85

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Solution

The fourth proportional to 156,806.80, 216,411.92 and 93,144.85 is: 128,550.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,806.80 : 216,411.92 = 93,144.85 : x
  2. Step 2: Convert to fraction form
    156,806.80/216,411.92 = 93,144.85/x
  3. Step 3: Cross multiply
    156,806.80x = 216,411.92 × 93,144.85
  4. Step 4: Simplify right side
    156,806.80x = 20,157,655,518.44
  5. Step 5: Solve for x
    x = 20,157,655,518.44/156,806.80
  6. Step 6: Final answer
    x = 128,550.90

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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.