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Finding the Fourth Proportional to 66,599.44, 99,948.47 and 31,539.20

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Solution

The fourth proportional to 66,599.44, 99,948.47 and 31,539.20 is: 47,332.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,599.44 : 99,948.47 = 31,539.20 : x
  2. Step 2: Convert to fraction form
    66,599.44/99,948.47 = 31,539.20/x
  3. Step 3: Cross multiply
    66,599.44x = 99,948.47 × 31,539.20
  4. Step 4: Simplify right side
    66,599.44x = 3,152,294,127.59
  5. Step 5: Solve for x
    x = 3,152,294,127.59/66,599.44
  6. Step 6: Final answer
    x = 47,332.14

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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.