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Finding the Fourth Proportional to 59,366.40, 81,892.80 and 40,531.20

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Solution

The fourth proportional to 59,366.40, 81,892.80 and 40,531.20 is: 55,910.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,366.40 : 81,892.80 = 40,531.20 : x
  2. Step 2: Convert to fraction form
    59,366.40/81,892.80 = 40,531.20/x
  3. Step 3: Cross multiply
    59,366.40x = 81,892.80 × 40,531.20
  4. Step 4: Simplify right side
    59,366.40x = 3,319,213,455.36
  5. Step 5: Solve for x
    x = 3,319,213,455.36/59,366.40
  6. Step 6: Final answer
    x = 55,910.64

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1.5x scale

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.