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Finding the Fourth Proportional to 66,547.70, 99,821.55 and 63,923.30

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Solution

The fourth proportional to 66,547.70, 99,821.55 and 63,923.30 is: 95,884.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,547.70 : 99,821.55 = 63,923.30 : x
  2. Step 2: Convert to fraction form
    66,547.70/99,821.55 = 63,923.30/x
  3. Step 3: Cross multiply
    66,547.70x = 99,821.55 × 63,923.30
  4. Step 4: Simplify right side
    66,547.70x = 6,380,922,887.12
  5. Step 5: Solve for x
    x = 6,380,922,887.12/66,547.70
  6. Step 6: Final answer
    x = 95,884.95

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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.