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Finding the Fourth Proportional to 644,069.70, 966,104.55 and 555,423.30

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Solution

The fourth proportional to 644,069.70, 966,104.55 and 555,423.30 is: 833,134.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,069.70 : 966,104.55 = 555,423.30 : x
  2. Step 2: Convert to fraction form
    644,069.70/966,104.55 = 555,423.30/x
  3. Step 3: Cross multiply
    644,069.70x = 966,104.55 × 555,423.30
  4. Step 4: Simplify right side
    644,069.70x = 536,596,977,306.02
  5. Step 5: Solve for x
    x = 536,596,977,306.02/644,069.70
  6. Step 6: Final answer
    x = 833,134.95

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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.