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Finding the Fourth Proportional to 514,142.40, 769,901.40 and 409,166.40

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Solution

The fourth proportional to 514,142.40, 769,901.40 and 409,166.40 is: 612,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,142.40 : 769,901.40 = 409,166.40 : x
  2. Step 2: Convert to fraction form
    514,142.40/769,901.40 = 409,166.40/x
  3. Step 3: Cross multiply
    514,142.40x = 769,901.40 × 409,166.40
  4. Step 4: Simplify right side
    514,142.40x = 315,017,784,192.96
  5. Step 5: Solve for x
    x = 315,017,784,192.96/514,142.40
  6. Step 6: Final answer
    x = 612,705.32

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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.