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Finding the Fourth Proportional to 65,712.70, 98,617.65 and 43,518.70

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Solution

The fourth proportional to 65,712.70, 98,617.65 and 43,518.70 is: 65,310.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,712.70 : 98,617.65 = 43,518.70 : x
  2. Step 2: Convert to fraction form
    65,712.70/98,617.65 = 43,518.70/x
  3. Step 3: Cross multiply
    65,712.70x = 98,617.65 × 43,518.70
  4. Step 4: Simplify right side
    65,712.70x = 4,291,711,925.06
  5. Step 5: Solve for x
    x = 4,291,711,925.06/65,712.70
  6. Step 6: Final answer
    x = 65,310.24

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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.