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Finding the Fourth Proportional to 136,930.40, 205,298.40 and 62,086.40

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Solution

The fourth proportional to 136,930.40, 205,298.40 and 62,086.40 is: 93,085.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,930.40 : 205,298.40 = 62,086.40 : x
  2. Step 2: Convert to fraction form
    136,930.40/205,298.40 = 62,086.40/x
  3. Step 3: Cross multiply
    136,930.40x = 205,298.40 × 62,086.40
  4. Step 4: Simplify right side
    136,930.40x = 12,746,238,581.76
  5. Step 5: Solve for x
    x = 12,746,238,581.76/136,930.40
  6. Step 6: Final answer
    x = 93,085.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.