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Finding the Fourth Proportional to 111,655.60, 154,082.98 and 61,353.52

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Solution

The fourth proportional to 111,655.60, 154,082.98 and 61,353.52 is: 84,666.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,655.60 : 154,082.98 = 61,353.52 : x
  2. Step 2: Convert to fraction form
    111,655.60/154,082.98 = 61,353.52/x
  3. Step 3: Cross multiply
    111,655.60x = 154,082.98 × 61,353.52
  4. Step 4: Simplify right side
    111,655.60x = 9,453,533,195.09
  5. Step 5: Solve for x
    x = 9,453,533,195.09/111,655.60
  6. Step 6: Final answer
    x = 84,666.90

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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.