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Finding the Fourth Proportional to 612,704.20, 844,594.68 and 430,920.76

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Solution

The fourth proportional to 612,704.20, 844,594.68 and 430,920.76 is: 594,011.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,704.20 : 844,594.68 = 430,920.76 : x
  2. Step 2: Convert to fraction form
    612,704.20/844,594.68 = 430,920.76/x
  3. Step 3: Cross multiply
    612,704.20x = 844,594.68 × 430,920.76
  4. Step 4: Simplify right side
    612,704.20x = 363,953,381,397.56
  5. Step 5: Solve for x
    x = 363,953,381,397.56/612,704.20
  6. Step 6: Final answer
    x = 594,011.57

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Half scale
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Double scale
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Similar ratio
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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.