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Finding the Fourth Proportional to 690,650.30, 953,141.22 and 418,744.23

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Solution

The fourth proportional to 690,650.30, 953,141.22 and 418,744.23 is: 577,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,650.30 : 953,141.22 = 418,744.23 : x
  2. Step 2: Convert to fraction form
    690,650.30/953,141.22 = 418,744.23/x
  3. Step 3: Cross multiply
    690,650.30x = 953,141.22 × 418,744.23
  4. Step 4: Simplify right side
    690,650.30x = 399,122,386,250.16
  5. Step 5: Solve for x
    x = 399,122,386,250.16/690,650.30
  6. Step 6: Final answer
    x = 577,893.60

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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.