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Finding the Fourth Proportional to 56,659.28, 84,947.45 and 28,565.46

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Solution

The fourth proportional to 56,659.28, 84,947.45 and 28,565.46 is: 42,827.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,659.28 : 84,947.45 = 28,565.46 : x
  2. Step 2: Convert to fraction form
    56,659.28/84,947.45 = 28,565.46/x
  3. Step 3: Cross multiply
    56,659.28x = 84,947.45 × 28,565.46
  4. Step 4: Simplify right side
    56,659.28x = 2,426,562,842.25
  5. Step 5: Solve for x
    x = 2,426,562,842.25/56,659.28
  6. Step 6: Final answer
    x = 42,827.28

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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.