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Finding the Fourth Proportional to 389,436.30, 584,154.45 and 256,466.70

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Solution

The fourth proportional to 389,436.30, 584,154.45 and 256,466.70 is: 384,700.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,436.30 : 584,154.45 = 256,466.70 : x
  2. Step 2: Convert to fraction form
    389,436.30/584,154.45 = 256,466.70/x
  3. Step 3: Cross multiply
    389,436.30x = 584,154.45 × 256,466.70
  4. Step 4: Simplify right side
    389,436.30x = 149,816,164,081.82
  5. Step 5: Solve for x
    x = 149,816,164,081.82/389,436.30
  6. Step 6: Final answer
    x = 384,700.05

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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.