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Finding the Fourth Proportional to 185,605.61, 256,135.90 and 100,722.67

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Solution

The fourth proportional to 185,605.61, 256,135.90 and 100,722.67 is: 138,997.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,605.61 : 256,135.90 = 100,722.67 : x
  2. Step 2: Convert to fraction form
    185,605.61/256,135.90 = 100,722.67/x
  3. Step 3: Cross multiply
    185,605.61x = 256,135.90 × 100,722.67
  4. Step 4: Simplify right side
    185,605.61x = 25,798,690,838.71
  5. Step 5: Solve for x
    x = 25,798,690,838.71/185,605.61
  6. Step 6: Final answer
    x = 138,997.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.