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Finding the Fourth Proportional to 191,714,987.70, 287,572,481.55 and 161,103,986.10

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Solution

The fourth proportional to 191,714,987.70, 287,572,481.55 and 161,103,986.10 is: 241,655,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,714,987.70 : 287,572,481.55 = 161,103,986.10 : x
  2. Step 2: Convert to fraction form
    191,714,987.70/287,572,481.55 = 161,103,986.10/x
  3. Step 3: Cross multiply
    191,714,987.70x = 287,572,481.55 × 161,103,986.10
  4. Step 4: Simplify right side
    191,714,987.70x = 46,329,073,070,373,704
  5. Step 5: Solve for x
    x = 46,329,073,070,373,704/191,714,987.70
  6. Step 6: Final answer
    x = 241,655,979.15

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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.