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Finding the Fourth Proportional to 881,876.78, 1,216,954.65 and 519,315.92

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Solution

The fourth proportional to 881,876.78, 1,216,954.65 and 519,315.92 is: 716,635.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,876.78 : 1,216,954.65 = 519,315.92 : x
  2. Step 2: Convert to fraction form
    881,876.78/1,216,954.65 = 519,315.92/x
  3. Step 3: Cross multiply
    881,876.78x = 1,216,954.65 × 519,315.92
  4. Step 4: Simplify right side
    881,876.78x = 631,983,923,663.03
  5. Step 5: Solve for x
    x = 631,983,923,663.03/881,876.78
  6. Step 6: Final answer
    x = 716,635.18

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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.