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Finding the Fourth Proportional to 64,798.32, 89,425.80 and 48,854.64

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Solution

The fourth proportional to 64,798.32, 89,425.80 and 48,854.64 is: 67,422.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,798.32 : 89,425.80 = 48,854.64 : x
  2. Step 2: Convert to fraction form
    64,798.32/89,425.80 = 48,854.64/x
  3. Step 3: Cross multiply
    64,798.32x = 89,425.80 × 48,854.64
  4. Step 4: Simplify right side
    64,798.32x = 4,368,865,265.71
  5. Step 5: Solve for x
    x = 4,368,865,265.71/64,798.32
  6. Step 6: Final answer
    x = 67,422.51

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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.