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Finding the Fourth Proportional to 65,604.80, 98,444.64 and 35,641.28

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Solution

The fourth proportional to 65,604.80, 98,444.64 and 35,641.28 is: 53,482.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,604.80 : 98,444.64 = 35,641.28 : x
  2. Step 2: Convert to fraction form
    65,604.80/98,444.64 = 35,641.28/x
  3. Step 3: Cross multiply
    65,604.80x = 98,444.64 × 35,641.28
  4. Step 4: Simplify right side
    65,604.80x = 3,508,692,978.74
  5. Step 5: Solve for x
    x = 3,508,692,978.74/65,604.80
  6. Step 6: Final answer
    x = 53,482.26

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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.