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Finding the Fourth Proportional to 157,149.86, 216,866.16 and 85,529.88

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Solution

The fourth proportional to 157,149.86, 216,866.16 and 85,529.88 is: 118,030.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,149.86 : 216,866.16 = 85,529.88 : x
  2. Step 2: Convert to fraction form
    157,149.86/216,866.16 = 85,529.88/x
  3. Step 3: Cross multiply
    157,149.86x = 216,866.16 × 85,529.88
  4. Step 4: Simplify right side
    157,149.86x = 18,548,536,640.86
  5. Step 5: Solve for x
    x = 18,548,536,640.86/157,149.86
  6. Step 6: Final answer
    x = 118,030.88

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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.