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Finding the Fourth Proportional to 89,152,649.38, 122,978,531.13 and 56,060,524.90

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Solution

The fourth proportional to 89,152,649.38, 122,978,531.13 and 56,060,524.90 is: 77,330,747.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,152,649.38 : 122,978,531.13 = 56,060,524.90 : x
  2. Step 2: Convert to fraction form
    89,152,649.38/122,978,531.13 = 56,060,524.90/x
  3. Step 3: Cross multiply
    89,152,649.38x = 122,978,531.13 × 56,060,524.90
  4. Step 4: Simplify right side
    89,152,649.38x = 6,894,241,006,578,790
  5. Step 5: Solve for x
    x = 6,894,241,006,578,790/89,152,649.38
  6. Step 6: Final answer
    x = 77,330,747.37

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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.