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Finding the Fourth Proportional to 275,312.10, 412,870.95 and 97,824.90

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Solution

The fourth proportional to 275,312.10, 412,870.95 and 97,824.90 is: 146,702.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,312.10 : 412,870.95 = 97,824.90 : x
  2. Step 2: Convert to fraction form
    275,312.10/412,870.95 = 97,824.90/x
  3. Step 3: Cross multiply
    275,312.10x = 412,870.95 × 97,824.90
  4. Step 4: Simplify right side
    275,312.10x = 40,389,059,396.66
  5. Step 5: Solve for x
    x = 40,389,059,396.66/275,312.10
  6. Step 6: Final answer
    x = 146,702.81

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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.