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Finding the Fourth Proportional to 59,054.81, 81,528.80 and 40,931.87

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Solution

The fourth proportional to 59,054.81, 81,528.80 and 40,931.87 is: 56,508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,054.81 : 81,528.80 = 40,931.87 : x
  2. Step 2: Convert to fraction form
    59,054.81/81,528.80 = 40,931.87/x
  3. Step 3: Cross multiply
    59,054.81x = 81,528.80 × 40,931.87
  4. Step 4: Simplify right side
    59,054.81x = 3,337,125,630.55
  5. Step 5: Solve for x
    x = 3,337,125,630.55/59,054.81
  6. Step 6: Final answer
    x = 56,508.96

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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.