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Finding the Fourth Proportional to 64,211.38, 88,615.65 and 35,918.98

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Solution

The fourth proportional to 64,211.38, 88,615.65 and 35,918.98 is: 49,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,211.38 : 88,615.65 = 35,918.98 : x
  2. Step 2: Convert to fraction form
    64,211.38/88,615.65 = 35,918.98/x
  3. Step 3: Cross multiply
    64,211.38x = 88,615.65 × 35,918.98
  4. Step 4: Simplify right side
    64,211.38x = 3,182,983,760.04
  5. Step 5: Solve for x
    x = 3,182,983,760.04/64,211.38
  6. Step 6: Final answer
    x = 49,570.40

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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.