Home / 191,678.10-287,572.68-79,337.58

Finding the Fourth Proportional to 191,678.10, 287,572.68 and 79,337.58

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Solution

The fourth proportional to 191,678.10, 287,572.68 and 79,337.58 is: 119,029.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,678.10 : 287,572.68 = 79,337.58 : x
  2. Step 2: Convert to fraction form
    191,678.10/287,572.68 = 79,337.58/x
  3. Step 3: Cross multiply
    191,678.10x = 287,572.68 × 79,337.58
  4. Step 4: Simplify right side
    191,678.10x = 22,815,320,505.31
  5. Step 5: Solve for x
    x = 22,815,320,505.31/191,678.10
  6. Step 6: Final answer
    x = 119,029.35

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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.