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Finding the Fourth Proportional to 59,947.40, 89,813.10 and 28,713.80

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Solution

The fourth proportional to 59,947.40, 89,813.10 and 28,713.80 is: 43,018.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,947.40 : 89,813.10 = 28,713.80 : x
  2. Step 2: Convert to fraction form
    59,947.40/89,813.10 = 28,713.80/x
  3. Step 3: Cross multiply
    59,947.40x = 89,813.10 × 28,713.80
  4. Step 4: Simplify right side
    59,947.40x = 2,578,875,390.78
  5. Step 5: Solve for x
    x = 2,578,875,390.78/59,947.40
  6. Step 6: Final answer
    x = 43,018.97

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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.