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Finding the Fourth Proportional to 608,543.70, 912,815.55 and 356,601.30

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Solution

The fourth proportional to 608,543.70, 912,815.55 and 356,601.30 is: 534,901.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,543.70 : 912,815.55 = 356,601.30 : x
  2. Step 2: Convert to fraction form
    608,543.70/912,815.55 = 356,601.30/x
  3. Step 3: Cross multiply
    608,543.70x = 912,815.55 × 356,601.30
  4. Step 4: Simplify right side
    608,543.70x = 325,511,211,790.22
  5. Step 5: Solve for x
    x = 325,511,211,790.22/608,543.70
  6. Step 6: Final answer
    x = 534,901.95

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.