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Finding the Fourth Proportional to 91,794,456.80, 137,544,718.80 and 48,607,330.40

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Solution

The fourth proportional to 91,794,456.80, 137,544,718.80 and 48,607,330.40 is: 72,833,173.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,794,456.80 : 137,544,718.80 = 48,607,330.40 : x
  2. Step 2: Convert to fraction form
    91,794,456.80/137,544,718.80 = 48,607,330.40/x
  3. Step 3: Cross multiply
    91,794,456.80x = 137,544,718.80 × 48,607,330.40
  4. Step 4: Simplify right side
    91,794,456.80x = 6,685,681,591,486,692
  5. Step 5: Solve for x
    x = 6,685,681,591,486,692/91,794,456.80
  6. Step 6: Final answer
    x = 72,833,173.42

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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.