Home / 78,865,608.11-118,192,669.50-61,379,280.73

Finding the Fourth Proportional to 78,865,608.11, 118,192,669.50 and 61,379,280.73

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Solution

The fourth proportional to 78,865,608.11, 118,192,669.50 and 61,379,280.73 is: 91,986,624.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865,608.11 : 118,192,669.50 = 61,379,280.73 : x
  2. Step 2: Convert to fraction form
    78,865,608.11/118,192,669.50 = 61,379,280.73/x
  3. Step 3: Cross multiply
    78,865,608.11x = 118,192,669.50 × 61,379,280.73
  4. Step 4: Simplify right side
    78,865,608.11x = 7,254,581,040,877,646
  5. Step 5: Solve for x
    x = 7,254,581,040,877,646/78,865,608.11
  6. Step 6: Final answer
    x = 91,986,624.01

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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.