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Finding the Fourth Proportional to 690,548.91, 953,005.40 and 418,628.26

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Solution

The fourth proportional to 690,548.91, 953,005.40 and 418,628.26 is: 577,736.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,548.91 : 953,005.40 = 418,628.26 : x
  2. Step 2: Convert to fraction form
    690,548.91/953,005.40 = 418,628.26/x
  3. Step 3: Cross multiply
    690,548.91x = 953,005.40 × 418,628.26
  4. Step 4: Simplify right side
    690,548.91x = 398,954,993,040.58
  5. Step 5: Solve for x
    x = 398,954,993,040.58/690,548.91
  6. Step 6: Final answer
    x = 577,736.04

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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.