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Finding the Fourth Proportional to 639,648.02, 882,728.04 and 353,186.24

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Solution

The fourth proportional to 639,648.02, 882,728.04 and 353,186.24 is: 487,404.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,648.02 : 882,728.04 = 353,186.24 : x
  2. Step 2: Convert to fraction form
    639,648.02/882,728.04 = 353,186.24/x
  3. Step 3: Cross multiply
    639,648.02x = 882,728.04 × 353,186.24
  4. Step 4: Simplify right side
    639,648.02x = 311,767,397,390.17
  5. Step 5: Solve for x
    x = 311,767,397,390.17/639,648.02
  6. Step 6: Final answer
    x = 487,404.62

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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.