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Finding the Fourth Proportional to 88,703.90, 133,055.85 and 71,207.90

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Solution

The fourth proportional to 88,703.90, 133,055.85 and 71,207.90 is: 106,811.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,703.90 : 133,055.85 = 71,207.90 : x
  2. Step 2: Convert to fraction form
    88,703.90/133,055.85 = 71,207.90/x
  3. Step 3: Cross multiply
    88,703.90x = 133,055.85 × 71,207.90
  4. Step 4: Simplify right side
    88,703.90x = 9,474,627,661.22
  5. Step 5: Solve for x
    x = 9,474,627,661.22/88,703.90
  6. Step 6: Final answer
    x = 106,811.85

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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.