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Finding the Fourth Proportional to 48,495.61, 66,913.90 and 28,348.59

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Solution

The fourth proportional to 48,495.61, 66,913.90 and 28,348.59 is: 39,115.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,495.61 : 66,913.90 = 28,348.59 : x
  2. Step 2: Convert to fraction form
    48,495.61/66,913.90 = 28,348.59/x
  3. Step 3: Cross multiply
    48,495.61x = 66,913.90 × 28,348.59
  4. Step 4: Simplify right side
    48,495.61x = 1,896,914,716.40
  5. Step 5: Solve for x
    x = 1,896,914,716.40/48,495.61
  6. Step 6: Final answer
    x = 39,115.18

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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.