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Finding the Fourth Proportional to 58,489.65, 80,678.55 and 38,347.83

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Solution

The fourth proportional to 58,489.65, 80,678.55 and 38,347.83 is: 52,895.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,489.65 : 80,678.55 = 38,347.83 : x
  2. Step 2: Convert to fraction form
    58,489.65/80,678.55 = 38,347.83/x
  3. Step 3: Cross multiply
    58,489.65x = 80,678.55 × 38,347.83
  4. Step 4: Simplify right side
    58,489.65x = 3,093,847,320.05
  5. Step 5: Solve for x
    x = 3,093,847,320.05/58,489.65
  6. Step 6: Final answer
    x = 52,895.64

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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.