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Finding the Fourth Proportional to 881,177, 1,216,084.40 and 499,206.92

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Solution

The fourth proportional to 881,177, 1,216,084.40 and 499,206.92 is: 688,939.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,177 : 1,216,084.40 = 499,206.92 : x
  2. Step 2: Convert to fraction form
    881,177/1,216,084.40 = 499,206.92/x
  3. Step 3: Cross multiply
    881,177x = 1,216,084.40 × 499,206.92
  4. Step 4: Simplify right side
    881,177x = 607,077,747,784.05
  5. Step 5: Solve for x
    x = 607,077,747,784.05/881,177
  6. Step 6: Final answer
    x = 688,939.62

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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.