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Finding the Fourth Proportional to 113,041.40, 169,646.34 and 43,057.40

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Solution

The fourth proportional to 113,041.40, 169,646.34 and 43,057.40 is: 64,618.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,041.40 : 169,646.34 = 43,057.40 : x
  2. Step 2: Convert to fraction form
    113,041.40/169,646.34 = 43,057.40/x
  3. Step 3: Cross multiply
    113,041.40x = 169,646.34 × 43,057.40
  4. Step 4: Simplify right side
    113,041.40x = 7,304,530,319.92
  5. Step 5: Solve for x
    x = 7,304,530,319.92/113,041.40
  6. Step 6: Final answer
    x = 64,618.19

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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.