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Finding the Fourth Proportional to 111,860.66, 154,332.96 and 63,454.62

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Solution

The fourth proportional to 111,860.66, 154,332.96 and 63,454.62 is: 87,547.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,860.66 : 154,332.96 = 63,454.62 : x
  2. Step 2: Convert to fraction form
    111,860.66/154,332.96 = 63,454.62/x
  3. Step 3: Cross multiply
    111,860.66x = 154,332.96 × 63,454.62
  4. Step 4: Simplify right side
    111,860.66x = 9,793,139,330.28
  5. Step 5: Solve for x
    x = 9,793,139,330.28/111,860.66
  6. Step 6: Final answer
    x = 87,547.66

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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.