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Finding the Fourth Proportional to 65,698.80, 98,555.40 and 63,625.20

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Solution

The fourth proportional to 65,698.80, 98,555.40 and 63,625.20 is: 95,444.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,698.80 : 98,555.40 = 63,625.20 : x
  2. Step 2: Convert to fraction form
    65,698.80/98,555.40 = 63,625.20/x
  3. Step 3: Cross multiply
    65,698.80x = 98,555.40 × 63,625.20
  4. Step 4: Simplify right side
    65,698.80x = 6,270,607,036.08
  5. Step 5: Solve for x
    x = 6,270,607,036.08/65,698.80
  6. Step 6: Final answer
    x = 95,444.77

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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.