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Finding the Fourth Proportional to 127,867.60, 191,639.40 and 48,876.40

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Solution

The fourth proportional to 127,867.60, 191,639.40 and 48,876.40 is: 73,252.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,867.60 : 191,639.40 = 48,876.40 : x
  2. Step 2: Convert to fraction form
    127,867.60/191,639.40 = 48,876.40/x
  3. Step 3: Cross multiply
    127,867.60x = 191,639.40 × 48,876.40
  4. Step 4: Simplify right side
    127,867.60x = 9,366,643,970.16
  5. Step 5: Solve for x
    x = 9,366,643,970.16/127,867.60
  6. Step 6: Final answer
    x = 73,252.68

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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.