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Finding the Fourth Proportional to 445,818.10, 668,727.15 and 293,602.90

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Solution

The fourth proportional to 445,818.10, 668,727.15 and 293,602.90 is: 440,404.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,818.10 : 668,727.15 = 293,602.90 : x
  2. Step 2: Convert to fraction form
    445,818.10/668,727.15 = 293,602.90/x
  3. Step 3: Cross multiply
    445,818.10x = 668,727.15 × 293,602.90
  4. Step 4: Simplify right side
    445,818.10x = 196,340,230,548.74
  5. Step 5: Solve for x
    x = 196,340,230,548.74/445,818.10
  6. Step 6: Final answer
    x = 440,404.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.