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Finding the Fourth Proportional to 639,644.04, 882,722.56 and 353,182.24

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Solution

The fourth proportional to 639,644.04, 882,722.56 and 353,182.24 is: 487,399.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,644.04 : 882,722.56 = 353,182.24 : x
  2. Step 2: Convert to fraction form
    639,644.04/882,722.56 = 353,182.24/x
  3. Step 3: Cross multiply
    639,644.04x = 882,722.56 × 353,182.24
  4. Step 4: Simplify right side
    639,644.04x = 311,761,931,039.33
  5. Step 5: Solve for x
    x = 311,761,931,039.33/639,644.04
  6. Step 6: Final answer
    x = 487,399.10

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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.