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Finding the Fourth Proportional to 66,366.72, 99,515.52 and 31,296.96

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Solution

The fourth proportional to 66,366.72, 99,515.52 and 31,296.96 is: 46,929.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366.72 : 99,515.52 = 31,296.96 : x
  2. Step 2: Convert to fraction form
    66,366.72/99,515.52 = 31,296.96/x
  3. Step 3: Cross multiply
    66,366.72x = 99,515.52 × 31,296.96
  4. Step 4: Simplify right side
    66,366.72x = 3,114,533,248.82
  5. Step 5: Solve for x
    x = 3,114,533,248.82/66,366.72
  6. Step 6: Final answer
    x = 46,929.14

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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.