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Finding the Fourth Proportional to 69,092.88, 103,100.42 and 61,646.14

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Solution

The fourth proportional to 69,092.88, 103,100.42 and 61,646.14 is: 91,988.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,092.88 : 103,100.42 = 61,646.14 : x
  2. Step 2: Convert to fraction form
    69,092.88/103,100.42 = 61,646.14/x
  3. Step 3: Cross multiply
    69,092.88x = 103,100.42 × 61,646.14
  4. Step 4: Simplify right side
    69,092.88x = 6,355,742,925.38
  5. Step 5: Solve for x
    x = 6,355,742,925.38/69,092.88
  6. Step 6: Final answer
    x = 91,988.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.