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Finding the Fourth Proportional to 534,911.40, 802,367.10 and 519,359.40

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Solution

The fourth proportional to 534,911.40, 802,367.10 and 519,359.40 is: 779,039.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,911.40 : 802,367.10 = 519,359.40 : x
  2. Step 2: Convert to fraction form
    534,911.40/802,367.10 = 519,359.40/x
  3. Step 3: Cross multiply
    534,911.40x = 802,367.10 × 519,359.40
  4. Step 4: Simplify right side
    534,911.40x = 416,716,895,635.74
  5. Step 5: Solve for x
    x = 416,716,895,635.74/534,911.40
  6. Step 6: Final answer
    x = 779,039.10

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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.