Home / 191,539,496,820.75-287,309,521,748.70-78,219,222,839.65

Finding the Fourth Proportional to 191,539,496,820.75, 287,309,521,748.70 and 78,219,222,839.65

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Solution

The fourth proportional to 191,539,496,820.75, 287,309,521,748.70 and 78,219,222,839.65 is: 117,328,947,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,539,496,820.75 : 287,309,521,748.70 = 78,219,222,839.65 : x
  2. Step 2: Convert to fraction form
    191,539,496,820.75/287,309,521,748.70 = 78,219,222,839.65/x
  3. Step 3: Cross multiply
    191,539,496,820.75x = 287,309,521,748.70 × 78,219,222,839.65
  4. Step 4: Simplify right side
    191,539,496,820.75x = 22,473,127,505,614,832,926,720
  5. Step 5: Solve for x
    x = 22,473,127,505,614,832,926,720/191,539,496,820.75
  6. Step 6: Final answer
    x = 117,328,947,181.30

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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.