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Finding the Fourth Proportional to 157,155.52, 216,871.20 and 85,533.76

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Solution

The fourth proportional to 157,155.52, 216,871.20 and 85,533.76 is: 118,034.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,155.52 : 216,871.20 = 85,533.76 : x
  2. Step 2: Convert to fraction form
    157,155.52/216,871.20 = 85,533.76/x
  3. Step 3: Cross multiply
    157,155.52x = 216,871.20 × 85,533.76
  4. Step 4: Simplify right side
    157,155.52x = 18,549,809,171.71
  5. Step 5: Solve for x
    x = 18,549,809,171.71/157,155.52
  6. Step 6: Final answer
    x = 118,034.73

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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.