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Finding the Fourth Proportional to 96,816.80, 145,225.20 and 63,639.20

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Solution

The fourth proportional to 96,816.80, 145,225.20 and 63,639.20 is: 95,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,816.80 : 145,225.20 = 63,639.20 : x
  2. Step 2: Convert to fraction form
    96,816.80/145,225.20 = 63,639.20/x
  3. Step 3: Cross multiply
    96,816.80x = 145,225.20 × 63,639.20
  4. Step 4: Simplify right side
    96,816.80x = 9,242,015,547.84
  5. Step 5: Solve for x
    x = 9,242,015,547.84/96,816.80
  6. Step 6: Final answer
    x = 95,458.80

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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.