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Finding the Fourth Proportional to 88,875.92, 122,636.88 and 57,087.92

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Solution

The fourth proportional to 88,875.92, 122,636.88 and 57,087.92 is: 78,773.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,875.92 : 122,636.88 = 57,087.92 : x
  2. Step 2: Convert to fraction form
    88,875.92/122,636.88 = 57,087.92/x
  3. Step 3: Cross multiply
    88,875.92x = 122,636.88 × 57,087.92
  4. Step 4: Simplify right side
    88,875.92x = 7,001,084,394.49
  5. Step 5: Solve for x
    x = 7,001,084,394.49/88,875.92
  6. Step 6: Final answer
    x = 78,773.69

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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.