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Finding the Fourth Proportional to 173,898.70, 261,020.85 and 85,252.30

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Solution

The fourth proportional to 173,898.70, 261,020.85 and 85,252.30 is: 127,963.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,898.70 : 261,020.85 = 85,252.30 : x
  2. Step 2: Convert to fraction form
    173,898.70/261,020.85 = 85,252.30/x
  3. Step 3: Cross multiply
    173,898.70x = 261,020.85 × 85,252.30
  4. Step 4: Simplify right side
    173,898.70x = 22,252,627,810.46
  5. Step 5: Solve for x
    x = 22,252,627,810.46/173,898.70
  6. Step 6: Final answer
    x = 127,963.16

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1.5x scale

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.