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Finding the Fourth Proportional to 88,706.90, 122,207.58 and 61,800.72

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Solution

The fourth proportional to 88,706.90, 122,207.58 and 61,800.72 is: 85,140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,706.90 : 122,207.58 = 61,800.72 : x
  2. Step 2: Convert to fraction form
    88,706.90/122,207.58 = 61,800.72/x
  3. Step 3: Cross multiply
    88,706.90x = 122,207.58 × 61,800.72
  4. Step 4: Simplify right side
    88,706.90x = 7,552,516,433.46
  5. Step 5: Solve for x
    x = 7,552,516,433.46/88,706.90
  6. Step 6: Final answer
    x = 85,140.13

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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.