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Finding the Fourth Proportional to 1,017,579.78, 1,404,262.90 and 558,724.08

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Solution

The fourth proportional to 1,017,579.78, 1,404,262.90 and 558,724.08 is: 771,040.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017,579.78 : 1,404,262.90 = 558,724.08 : x
  2. Step 2: Convert to fraction form
    1,017,579.78/1,404,262.90 = 558,724.08/x
  3. Step 3: Cross multiply
    1,017,579.78x = 1,404,262.90 × 558,724.08
  4. Step 4: Simplify right side
    1,017,579.78x = 784,595,496,880.63
  5. Step 5: Solve for x
    x = 784,595,496,880.63/1,017,579.78
  6. Step 6: Final answer
    x = 771,040.77

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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.