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Finding the Fourth Proportional to 58,488.48, 80,779.68 and 39,592.80

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Solution

The fourth proportional to 58,488.48, 80,779.68 and 39,592.80 is: 54,682.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,488.48 : 80,779.68 = 39,592.80 : x
  2. Step 2: Convert to fraction form
    58,488.48/80,779.68 = 39,592.80/x
  3. Step 3: Cross multiply
    58,488.48x = 80,779.68 × 39,592.80
  4. Step 4: Simplify right side
    58,488.48x = 3,198,293,714.30
  5. Step 5: Solve for x
    x = 3,198,293,714.30/58,488.48
  6. Step 6: Final answer
    x = 54,682.46

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1.5x scale

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.