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Finding the Fourth Proportional to 71,488.91, 98,659.35 and 41,275.51

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Solution

The fourth proportional to 71,488.91, 98,659.35 and 41,275.51 is: 56,962.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,488.91 : 98,659.35 = 41,275.51 : x
  2. Step 2: Convert to fraction form
    71,488.91/98,659.35 = 41,275.51/x
  3. Step 3: Cross multiply
    71,488.91x = 98,659.35 × 41,275.51
  4. Step 4: Simplify right side
    71,488.91x = 4,072,214,740.87
  5. Step 5: Solve for x
    x = 4,072,214,740.87/71,488.91
  6. Step 6: Final answer
    x = 56,962.89

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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.