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Finding the Fourth Proportional to 476,881.11, 715,432.46 and 139,908.15

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Solution

The fourth proportional to 476,881.11, 715,432.46 and 139,908.15 is: 209,894.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,881.11 : 715,432.46 = 139,908.15 : x
  2. Step 2: Convert to fraction form
    476,881.11/715,432.46 = 139,908.15/x
  3. Step 3: Cross multiply
    476,881.11x = 715,432.46 × 139,908.15
  4. Step 4: Simplify right side
    476,881.11x = 100,094,831,229.01
  5. Step 5: Solve for x
    x = 100,094,831,229.01/476,881.11
  6. Step 6: Final answer
    x = 209,894.73

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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.