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Finding the Fourth Proportional to 69,368.81, 95,731.77 and 39,154.08

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Solution

The fourth proportional to 69,368.81, 95,731.77 and 39,154.08 is: 54,034.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,368.81 : 95,731.77 = 39,154.08 : x
  2. Step 2: Convert to fraction form
    69,368.81/95,731.77 = 39,154.08/x
  3. Step 3: Cross multiply
    69,368.81x = 95,731.77 × 39,154.08
  4. Step 4: Simplify right side
    69,368.81x = 3,748,289,886.94
  5. Step 5: Solve for x
    x = 3,748,289,886.94/69,368.81
  6. Step 6: Final answer
    x = 54,034.23

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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.