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Finding the Fourth Proportional to 61,853.84, 85,402.68 and 38,012.48

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Solution

The fourth proportional to 61,853.84, 85,402.68 and 38,012.48 is: 52,484.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,853.84 : 85,402.68 = 38,012.48 : x
  2. Step 2: Convert to fraction form
    61,853.84/85,402.68 = 38,012.48/x
  3. Step 3: Cross multiply
    61,853.84x = 85,402.68 × 38,012.48
  4. Step 4: Simplify right side
    61,853.84x = 3,246,367,665.45
  5. Step 5: Solve for x
    x = 3,246,367,665.45/61,853.84
  6. Step 6: Final answer
    x = 52,484.50

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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.