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Finding the Fourth Proportional to 48,490.06, 66,917.19 and 28,348.66

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Solution

The fourth proportional to 48,490.06, 66,917.19 and 28,348.66 is: 39,121.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,490.06 : 66,917.19 = 28,348.66 : x
  2. Step 2: Convert to fraction form
    48,490.06/66,917.19 = 28,348.66/x
  3. Step 3: Cross multiply
    48,490.06x = 66,917.19 × 28,348.66
  4. Step 4: Simplify right side
    48,490.06x = 1,897,012,667.47
  5. Step 5: Solve for x
    x = 1,897,012,667.47/48,490.06
  6. Step 6: Final answer
    x = 39,121.68

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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.