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Finding the Fourth Proportional to 74,733.71, 103,074.19 and 47,878.71

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Solution

The fourth proportional to 74,733.71, 103,074.19 and 47,878.71 is: 66,035.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,733.71 : 103,074.19 = 47,878.71 : x
  2. Step 2: Convert to fraction form
    74,733.71/103,074.19 = 47,878.71/x
  3. Step 3: Cross multiply
    74,733.71x = 103,074.19 × 47,878.71
  4. Step 4: Simplify right side
    74,733.71x = 4,935,059,251.49
  5. Step 5: Solve for x
    x = 4,935,059,251.49/74,733.71
  6. Step 6: Final answer
    x = 66,035.25

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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.