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Finding the Fourth Proportional to 874,908.90, 1,312,363.35 and 519,740.10

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Solution

The fourth proportional to 874,908.90, 1,312,363.35 and 519,740.10 is: 779,610.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,908.90 : 1,312,363.35 = 519,740.10 : x
  2. Step 2: Convert to fraction form
    874,908.90/1,312,363.35 = 519,740.10/x
  3. Step 3: Cross multiply
    874,908.90x = 1,312,363.35 × 519,740.10
  4. Step 4: Simplify right side
    874,908.90x = 682,087,858,765.34
  5. Step 5: Solve for x
    x = 682,087,858,765.34/874,908.90
  6. Step 6: Final answer
    x = 779,610.15

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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.