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Finding the Fourth Proportional to 111,654.13, 154,085.13 and 61,353.13

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Solution

The fourth proportional to 111,654.13, 154,085.13 and 61,353.13 is: 84,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,654.13 : 154,085.13 = 61,353.13 : x
  2. Step 2: Convert to fraction form
    111,654.13/154,085.13 = 61,353.13/x
  3. Step 3: Cross multiply
    111,654.13x = 154,085.13 × 61,353.13
  4. Step 4: Simplify right side
    111,654.13x = 9,453,605,011.96
  5. Step 5: Solve for x
    x = 9,453,605,011.96/111,654.13
  6. Step 6: Final answer
    x = 84,668.65

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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.