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Finding the Fourth Proportional to 74,881.52, 112,224.60 and 30,456.32

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Solution

The fourth proportional to 74,881.52, 112,224.60 and 30,456.32 is: 45,644.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,881.52 : 112,224.60 = 30,456.32 : x
  2. Step 2: Convert to fraction form
    74,881.52/112,224.60 = 30,456.32/x
  3. Step 3: Cross multiply
    74,881.52x = 112,224.60 × 30,456.32
  4. Step 4: Simplify right side
    74,881.52x = 3,417,948,329.47
  5. Step 5: Solve for x
    x = 3,417,948,329.47/74,881.52
  6. Step 6: Final answer
    x = 45,644.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.