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Finding the Fourth Proportional to 91,671.92, 137,547.38 and 49,581.64

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Solution

The fourth proportional to 91,671.92, 137,547.38 and 49,581.64 is: 74,393.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,671.92 : 137,547.38 = 49,581.64 : x
  2. Step 2: Convert to fraction form
    91,671.92/137,547.38 = 49,581.64/x
  3. Step 3: Cross multiply
    91,671.92x = 137,547.38 × 49,581.64
  4. Step 4: Simplify right side
    91,671.92x = 6,819,824,458.19
  5. Step 5: Solve for x
    x = 6,819,824,458.19/91,671.92
  6. Step 6: Final answer
    x = 74,393.82

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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.