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Finding the Fourth Proportional to 61,899.76, 85,423.73 and 35,041.72

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Solution

The fourth proportional to 61,899.76, 85,423.73 and 35,041.72 is: 48,358.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,899.76 : 85,423.73 = 35,041.72 : x
  2. Step 2: Convert to fraction form
    61,899.76/85,423.73 = 35,041.72/x
  3. Step 3: Cross multiply
    61,899.76x = 85,423.73 × 35,041.72
  4. Step 4: Simplify right side
    61,899.76x = 2,993,394,428.02
  5. Step 5: Solve for x
    x = 2,993,394,428.02/61,899.76
  6. Step 6: Final answer
    x = 48,358.74

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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.