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Finding the Fourth Proportional to 61,207.60, 91,811.40 and 59,069.20

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Solution

The fourth proportional to 61,207.60, 91,811.40 and 59,069.20 is: 88,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,207.60 : 91,811.40 = 59,069.20 : x
  2. Step 2: Convert to fraction form
    61,207.60/91,811.40 = 59,069.20/x
  3. Step 3: Cross multiply
    61,207.60x = 91,811.40 × 59,069.20
  4. Step 4: Simplify right side
    61,207.60x = 5,423,225,948.88
  5. Step 5: Solve for x
    x = 5,423,225,948.88/61,207.60
  6. Step 6: Final answer
    x = 88,603.80

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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.