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Finding the Fourth Proportional to 605,628.90, 910,411.65 and 519,023.70

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Solution

The fourth proportional to 605,628.90, 910,411.65 and 519,023.70 is: 780,222.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,628.90 : 910,411.65 = 519,023.70 : x
  2. Step 2: Convert to fraction form
    605,628.90/910,411.65 = 519,023.70/x
  3. Step 3: Cross multiply
    605,628.90x = 910,411.65 × 519,023.70
  4. Step 4: Simplify right side
    605,628.90x = 472,525,223,106.11
  5. Step 5: Solve for x
    x = 472,525,223,106.11/605,628.90
  6. Step 6: Final answer
    x = 780,222.38

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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.