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Finding the Fourth Proportional to 54,886.55, 75,737.64 and 31,008.61

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Solution

The fourth proportional to 54,886.55, 75,737.64 and 31,008.61 is: 42,788.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,886.55 : 75,737.64 = 31,008.61 : x
  2. Step 2: Convert to fraction form
    54,886.55/75,737.64 = 31,008.61/x
  3. Step 3: Cross multiply
    54,886.55x = 75,737.64 × 31,008.61
  4. Step 4: Simplify right side
    54,886.55x = 2,348,518,941.08
  5. Step 5: Solve for x
    x = 2,348,518,941.08/54,886.55
  6. Step 6: Final answer
    x = 42,788.61

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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.