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Finding the Fourth Proportional to 663,841.44, 916,178.58 and 377,404.38

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Solution

The fourth proportional to 663,841.44, 916,178.58 and 377,404.38 is: 520,862.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,841.44 : 916,178.58 = 377,404.38 : x
  2. Step 2: Convert to fraction form
    663,841.44/916,178.58 = 377,404.38/x
  3. Step 3: Cross multiply
    663,841.44x = 916,178.58 × 377,404.38
  4. Step 4: Simplify right side
    663,841.44x = 345,769,808,954.18
  5. Step 5: Solve for x
    x = 345,769,808,954.18/663,841.44
  6. Step 6: Final answer
    x = 520,862.04

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Double scale
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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.