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Finding the Fourth Proportional to 108,700.80, 163,051.20 and 98,203.20

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Solution

The fourth proportional to 108,700.80, 163,051.20 and 98,203.20 is: 147,304.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,700.80 : 163,051.20 = 98,203.20 : x
  2. Step 2: Convert to fraction form
    108,700.80/163,051.20 = 98,203.20/x
  3. Step 3: Cross multiply
    108,700.80x = 163,051.20 × 98,203.20
  4. Step 4: Simplify right side
    108,700.80x = 16,012,149,603.84
  5. Step 5: Solve for x
    x = 16,012,149,603.84/108,700.80
  6. Step 6: Final answer
    x = 147,304.80

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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.