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Finding the Fourth Proportional to 690,894.30, 953,436.07 and 400,562.29

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Solution

The fourth proportional to 690,894.30, 953,436.07 and 400,562.29 is: 552,777.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,894.30 : 953,436.07 = 400,562.29 : x
  2. Step 2: Convert to fraction form
    690,894.30/953,436.07 = 400,562.29/x
  3. Step 3: Cross multiply
    690,894.30x = 953,436.07 × 400,562.29
  4. Step 4: Simplify right side
    690,894.30x = 381,910,535,567.80
  5. Step 5: Solve for x
    x = 381,910,535,567.80/690,894.30
  6. Step 6: Final answer
    x = 552,777.08

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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.