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Finding the Fourth Proportional to 624,122.51, 861,313.49 and 365,963.57

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Solution

The fourth proportional to 624,122.51, 861,313.49 and 365,963.57 is: 505,044.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,122.51 : 861,313.49 = 365,963.57 : x
  2. Step 2: Convert to fraction form
    624,122.51/861,313.49 = 365,963.57/x
  3. Step 3: Cross multiply
    624,122.51x = 861,313.49 × 365,963.57
  4. Step 4: Simplify right side
    624,122.51x = 315,209,359,689.56
  5. Step 5: Solve for x
    x = 315,209,359,689.56/624,122.51
  6. Step 6: Final answer
    x = 505,044.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.