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Finding the Fourth Proportional to 124,425.54, 186,639.02 and 30,931.29

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Solution

The fourth proportional to 124,425.54, 186,639.02 and 30,931.29 is: 46,397.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,425.54 : 186,639.02 = 30,931.29 : x
  2. Step 2: Convert to fraction form
    124,425.54/186,639.02 = 30,931.29/x
  3. Step 3: Cross multiply
    124,425.54x = 186,639.02 × 30,931.29
  4. Step 4: Simplify right side
    124,425.54x = 5,772,985,652.94
  5. Step 5: Solve for x
    x = 5,772,985,652.94/124,425.54
  6. Step 6: Final answer
    x = 46,397.11

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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.