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Finding the Fourth Proportional to 606,718.20, 910,077.30 and 417,761.40

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Solution

The fourth proportional to 606,718.20, 910,077.30 and 417,761.40 is: 626,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,718.20 : 910,077.30 = 417,761.40 : x
  2. Step 2: Convert to fraction form
    606,718.20/910,077.30 = 417,761.40/x
  3. Step 3: Cross multiply
    606,718.20x = 910,077.30 × 417,761.40
  4. Step 4: Simplify right side
    606,718.20x = 380,195,166,956.22
  5. Step 5: Solve for x
    x = 380,195,166,956.22/606,718.20
  6. Step 6: Final answer
    x = 626,642.10

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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.