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Finding the Fourth Proportional to 61,188.39, 84,466.35 and 57,358.38

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Solution

The fourth proportional to 61,188.39, 84,466.35 and 57,358.38 is: 79,179.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,188.39 : 84,466.35 = 57,358.38 : x
  2. Step 2: Convert to fraction form
    61,188.39/84,466.35 = 57,358.38/x
  3. Step 3: Cross multiply
    61,188.39x = 84,466.35 × 57,358.38
  4. Step 4: Simplify right side
    61,188.39x = 4,844,853,000.51
  5. Step 5: Solve for x
    x = 4,844,853,000.51/61,188.39
  6. Step 6: Final answer
    x = 79,179.29

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1.5x scale

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.