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Finding the Fourth Proportional to 58,458.99, 80,619.61 and 38,308.56

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Solution

The fourth proportional to 58,458.99, 80,619.61 and 38,308.56 is: 52,830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,458.99 : 80,619.61 = 38,308.56 : x
  2. Step 2: Convert to fraction form
    58,458.99/80,619.61 = 38,308.56/x
  3. Step 3: Cross multiply
    58,458.99x = 80,619.61 × 38,308.56
  4. Step 4: Simplify right side
    58,458.99x = 3,088,420,763.76
  5. Step 5: Solve for x
    x = 3,088,420,763.76/58,458.99
  6. Step 6: Final answer
    x = 52,830.55

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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.