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Finding the Fourth Proportional to 468,100.36, 645,974.85 and 253,239.76

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Solution

The fourth proportional to 468,100.36, 645,974.85 and 253,239.76 is: 349,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,100.36 : 645,974.85 = 253,239.76 : x
  2. Step 2: Convert to fraction form
    468,100.36/645,974.85 = 253,239.76/x
  3. Step 3: Cross multiply
    468,100.36x = 645,974.85 × 253,239.76
  4. Step 4: Simplify right side
    468,100.36x = 163,586,515,980.04
  5. Step 5: Solve for x
    x = 163,586,515,980.04/468,100.36
  6. Step 6: Final answer
    x = 349,468.90

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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.