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Finding the Fourth Proportional to 75,339.72, 103,969.68 and 47,061.84

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Solution

The fourth proportional to 75,339.72, 103,969.68 and 47,061.84 is: 64,945.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,339.72 : 103,969.68 = 47,061.84 : x
  2. Step 2: Convert to fraction form
    75,339.72/103,969.68 = 47,061.84/x
  3. Step 3: Cross multiply
    75,339.72x = 103,969.68 × 47,061.84
  4. Step 4: Simplify right side
    75,339.72x = 4,893,004,445.01
  5. Step 5: Solve for x
    x = 4,893,004,445.01/75,339.72
  6. Step 6: Final answer
    x = 64,945.88

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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.