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Finding the Fourth Proportional to 124,479.42, 186,719.24 and 53,355.90

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Solution

The fourth proportional to 124,479.42, 186,719.24 and 53,355.90 is: 80,033.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,479.42 : 186,719.24 = 53,355.90 : x
  2. Step 2: Convert to fraction form
    124,479.42/186,719.24 = 53,355.90/x
  3. Step 3: Cross multiply
    124,479.42x = 186,719.24 × 53,355.90
  4. Step 4: Simplify right side
    124,479.42x = 9,962,573,931.10
  5. Step 5: Solve for x
    x = 9,962,573,931.10/124,479.42
  6. Step 6: Final answer
    x = 80,033.90

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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.