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Finding the Fourth Proportional to 639,666.16, 882,753.02 and 353,204.24

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Solution

The fourth proportional to 639,666.16, 882,753.02 and 353,204.24 is: 487,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,666.16 : 882,753.02 = 353,204.24 : x
  2. Step 2: Convert to fraction form
    639,666.16/882,753.02 = 353,204.24/x
  3. Step 3: Cross multiply
    639,666.16x = 882,753.02 × 353,204.24
  4. Step 4: Simplify right side
    639,666.16x = 311,792,109,536.81
  5. Step 5: Solve for x
    x = 311,792,109,536.81/639,666.16
  6. Step 6: Final answer
    x = 487,429.43

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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.