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Finding the Fourth Proportional to 519,904.20, 778,128.30 and 377,344.20

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Solution

The fourth proportional to 519,904.20, 778,128.30 and 377,344.20 is: 564,762.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,904.20 : 778,128.30 = 377,344.20 : x
  2. Step 2: Convert to fraction form
    519,904.20/778,128.30 = 377,344.20/x
  3. Step 3: Cross multiply
    519,904.20x = 778,128.30 × 377,344.20
  4. Step 4: Simplify right side
    519,904.20x = 293,622,200,860.86
  5. Step 5: Solve for x
    x = 293,622,200,860.86/519,904.20
  6. Step 6: Final answer
    x = 564,762.13

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1.5x scale

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.