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Finding the Fourth Proportional to 108,803.90, 163,203.69 and 71,598.98

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Solution

The fourth proportional to 108,803.90, 163,203.69 and 71,598.98 is: 107,397.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,803.90 : 163,203.69 = 71,598.98 : x
  2. Step 2: Convert to fraction form
    108,803.90/163,203.69 = 71,598.98/x
  3. Step 3: Cross multiply
    108,803.90x = 163,203.69 × 71,598.98
  4. Step 4: Simplify right side
    108,803.90x = 11,685,217,736.24
  5. Step 5: Solve for x
    x = 11,685,217,736.24/108,803.90
  6. Step 6: Final answer
    x = 107,397.05

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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.