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Finding the Fourth Proportional to 111,800.64, 154,281.80 and 61,499.68

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Solution

The fourth proportional to 111,800.64, 154,281.80 and 61,499.68 is: 84,867.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,800.64 : 154,281.80 = 61,499.68 : x
  2. Step 2: Convert to fraction form
    111,800.64/154,281.80 = 61,499.68/x
  3. Step 3: Cross multiply
    111,800.64x = 154,281.80 × 61,499.68
  4. Step 4: Simplify right side
    111,800.64x = 9,488,281,329.82
  5. Step 5: Solve for x
    x = 9,488,281,329.82/111,800.64
  6. Step 6: Final answer
    x = 84,867.86

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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.