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Finding the Fourth Proportional to 663,896.32, 916,172.72 and 377,416.40

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Solution

The fourth proportional to 663,896.32, 916,172.72 and 377,416.40 is: 520,832.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,896.32 : 916,172.72 = 377,416.40 : x
  2. Step 2: Convert to fraction form
    663,896.32/916,172.72 = 377,416.40/x
  3. Step 3: Cross multiply
    663,896.32x = 916,172.72 × 377,416.40
  4. Step 4: Simplify right side
    663,896.32x = 345,778,609,760.61
  5. Step 5: Solve for x
    x = 345,778,609,760.61/663,896.32
  6. Step 6: Final answer
    x = 520,832.24

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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.