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Finding the Fourth Proportional to 624,142.40, 934,901.40 and 519,166.40

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Solution

The fourth proportional to 624,142.40, 934,901.40 and 519,166.40 is: 777,658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,142.40 : 934,901.40 = 519,166.40 : x
  2. Step 2: Convert to fraction form
    624,142.40/934,901.40 = 519,166.40/x
  3. Step 3: Cross multiply
    624,142.40x = 934,901.40 × 519,166.40
  4. Step 4: Simplify right side
    624,142.40x = 485,369,394,192.96
  5. Step 5: Solve for x
    x = 485,369,394,192.96/624,142.40
  6. Step 6: Final answer
    x = 777,658.10

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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.