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Finding the Fourth Proportional to 127,378.90, 191,070.15 and 48,497.44

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Solution

The fourth proportional to 127,378.90, 191,070.15 and 48,497.44 is: 72,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,378.90 : 191,070.15 = 48,497.44 : x
  2. Step 2: Convert to fraction form
    127,378.90/191,070.15 = 48,497.44/x
  3. Step 3: Cross multiply
    127,378.90x = 191,070.15 × 48,497.44
  4. Step 4: Simplify right side
    127,378.90x = 9,266,413,135.42
  5. Step 5: Solve for x
    x = 9,266,413,135.42/127,378.90
  6. Step 6: Final answer
    x = 72,746.85

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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.