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Finding the Fourth Proportional to 128,614.80, 193,046.70 and 62,101.64

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Solution

The fourth proportional to 128,614.80, 193,046.70 and 62,101.64 is: 93,212.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,614.80 : 193,046.70 = 62,101.64 : x
  2. Step 2: Convert to fraction form
    128,614.80/193,046.70 = 62,101.64/x
  3. Step 3: Cross multiply
    128,614.80x = 193,046.70 × 62,101.64
  4. Step 4: Simplify right side
    128,614.80x = 11,988,516,666.59
  5. Step 5: Solve for x
    x = 11,988,516,666.59/128,614.80
  6. Step 6: Final answer
    x = 93,212.57

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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.