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Finding the Fourth Proportional to 71,530.72, 98,707.80 and 44,671.64

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Solution

The fourth proportional to 71,530.72, 98,707.80 and 44,671.64 is: 61,643.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,530.72 : 98,707.80 = 44,671.64 : x
  2. Step 2: Convert to fraction form
    71,530.72/98,707.80 = 44,671.64/x
  3. Step 3: Cross multiply
    71,530.72x = 98,707.80 × 44,671.64
  4. Step 4: Simplify right side
    71,530.72x = 4,409,439,306.79
  5. Step 5: Solve for x
    x = 4,409,439,306.79/71,530.72
  6. Step 6: Final answer
    x = 61,643.99

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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.