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Finding the Fourth Proportional to 534,912.40, 802,368.60 and 519,360.40

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Solution

The fourth proportional to 534,912.40, 802,368.60 and 519,360.40 is: 779,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,912.40 : 802,368.60 = 519,360.40 : x
  2. Step 2: Convert to fraction form
    534,912.40/802,368.60 = 519,360.40/x
  3. Step 3: Cross multiply
    534,912.40x = 802,368.60 × 519,360.40
  4. Step 4: Simplify right side
    534,912.40x = 416,718,477,043.44
  5. Step 5: Solve for x
    x = 416,718,477,043.44/534,912.40
  6. Step 6: Final answer
    x = 779,040.60

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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.