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Finding the Fourth Proportional to 66,925.80, 92,360.50 and 40,063.11

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Solution

The fourth proportional to 66,925.80, 92,360.50 and 40,063.11 is: 55,288.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,925.80 : 92,360.50 = 40,063.11 : x
  2. Step 2: Convert to fraction form
    66,925.80/92,360.50 = 40,063.11/x
  3. Step 3: Cross multiply
    66,925.80x = 92,360.50 × 40,063.11
  4. Step 4: Simplify right side
    66,925.80x = 3,700,248,871.16
  5. Step 5: Solve for x
    x = 3,700,248,871.16/66,925.80
  6. Step 6: Final answer
    x = 55,288.83

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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.