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Finding the Fourth Proportional to 64,886.33, 89,543.39 and 36,207.20

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Solution

The fourth proportional to 64,886.33, 89,543.39 and 36,207.20 is: 49,966.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,886.33 : 89,543.39 = 36,207.20 : x
  2. Step 2: Convert to fraction form
    64,886.33/89,543.39 = 36,207.20/x
  3. Step 3: Cross multiply
    64,886.33x = 89,543.39 × 36,207.20
  4. Step 4: Simplify right side
    64,886.33x = 3,242,115,473.23
  5. Step 5: Solve for x
    x = 3,242,115,473.23/64,886.33
  6. Step 6: Final answer
    x = 49,966.08

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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.