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Finding the Fourth Proportional to 111,352.68, 153,691.79 and 93,416.55

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Solution

The fourth proportional to 111,352.68, 153,691.79 and 93,416.55 is: 128,935.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,352.68 : 153,691.79 = 93,416.55 : x
  2. Step 2: Convert to fraction form
    111,352.68/153,691.79 = 93,416.55/x
  3. Step 3: Cross multiply
    111,352.68x = 153,691.79 × 93,416.55
  4. Step 4: Simplify right side
    111,352.68x = 14,357,356,785.12
  5. Step 5: Solve for x
    x = 14,357,356,785.12/111,352.68
  6. Step 6: Final answer
    x = 128,935.89

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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.