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Finding the Fourth Proportional to 913,041, 1,260,400.16 and 545,647.78

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Solution

The fourth proportional to 913,041, 1,260,400.16 and 545,647.78 is: 753,235.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,041 : 1,260,400.16 = 545,647.78 : x
  2. Step 2: Convert to fraction form
    913,041/1,260,400.16 = 545,647.78/x
  3. Step 3: Cross multiply
    913,041x = 1,260,400.16 × 545,647.78
  4. Step 4: Simplify right side
    913,041x = 687,734,549,215.65
  5. Step 5: Solve for x
    x = 687,734,549,215.65/913,041
  6. Step 6: Final answer
    x = 753,235.12

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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.