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Finding the Fourth Proportional to 624,291.40, 935,124.90 and 519,315.40

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Solution

The fourth proportional to 624,291.40, 935,124.90 and 519,315.40 is: 777,881.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,291.40 : 935,124.90 = 519,315.40 : x
  2. Step 2: Convert to fraction form
    624,291.40/935,124.90 = 519,315.40/x
  3. Step 3: Cross multiply
    624,291.40x = 935,124.90 × 519,315.40
  4. Step 4: Simplify right side
    624,291.40x = 485,624,761,493.46
  5. Step 5: Solve for x
    x = 485,624,761,493.46/624,291.40
  6. Step 6: Final answer
    x = 777,881.55

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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.