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Finding the Fourth Proportional to 61,390.48, 84,718.40 and 34,894.48

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Solution

The fourth proportional to 61,390.48, 84,718.40 and 34,894.48 is: 48,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,390.48 : 84,718.40 = 34,894.48 : x
  2. Step 2: Convert to fraction form
    61,390.48/84,718.40 = 34,894.48/x
  3. Step 3: Cross multiply
    61,390.48x = 84,718.40 × 34,894.48
  4. Step 4: Simplify right side
    61,390.48x = 2,956,204,514.43
  5. Step 5: Solve for x
    x = 2,956,204,514.43/61,390.48
  6. Step 6: Final answer
    x = 48,154.12

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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.