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Finding the Fourth Proportional to 283,898.07, 391,779.45 and 156,581.87

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Solution

The fourth proportional to 283,898.07, 391,779.45 and 156,581.87 is: 216,083.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,898.07 : 391,779.45 = 156,581.87 : x
  2. Step 2: Convert to fraction form
    283,898.07/391,779.45 = 156,581.87/x
  3. Step 3: Cross multiply
    283,898.07x = 391,779.45 × 156,581.87
  4. Step 4: Simplify right side
    283,898.07x = 61,345,556,949.67
  5. Step 5: Solve for x
    x = 61,345,556,949.67/283,898.07
  6. Step 6: Final answer
    x = 216,083.04

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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.