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Finding the Fourth Proportional to 557,648.96, 769,560.25 and 303,000.15

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Solution

The fourth proportional to 557,648.96, 769,560.25 and 303,000.15 is: 418,142.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,648.96 : 769,560.25 = 303,000.15 : x
  2. Step 2: Convert to fraction form
    557,648.96/769,560.25 = 303,000.15/x
  3. Step 3: Cross multiply
    557,648.96x = 769,560.25 × 303,000.15
  4. Step 4: Simplify right side
    557,648.96x = 233,176,871,184.04
  5. Step 5: Solve for x
    x = 233,176,871,184.04/557,648.96
  6. Step 6: Final answer
    x = 418,142.75

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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.