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Finding the Fourth Proportional to 108,706.20, 162,929.70 and 45,526.20

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Solution

The fourth proportional to 108,706.20, 162,929.70 and 45,526.20 is: 68,235.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,706.20 : 162,929.70 = 45,526.20 : x
  2. Step 2: Convert to fraction form
    108,706.20/162,929.70 = 45,526.20/x
  3. Step 3: Cross multiply
    108,706.20x = 162,929.70 × 45,526.20
  4. Step 4: Simplify right side
    108,706.20x = 7,417,570,108.14
  5. Step 5: Solve for x
    x = 7,417,570,108.14/108,706.20
  6. Step 6: Final answer
    x = 68,235.02

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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.