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Finding the Fourth Proportional to 74,863.30, 103,328.72 and 49,374.22

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Solution

The fourth proportional to 74,863.30, 103,328.72 and 49,374.22 is: 68,147.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,863.30 : 103,328.72 = 49,374.22 : x
  2. Step 2: Convert to fraction form
    74,863.30/103,328.72 = 49,374.22/x
  3. Step 3: Cross multiply
    74,863.30x = 103,328.72 × 49,374.22
  4. Step 4: Simplify right side
    74,863.30x = 5,101,774,953.60
  5. Step 5: Solve for x
    x = 5,101,774,953.60/74,863.30
  6. Step 6: Final answer
    x = 68,147.88

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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.