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Finding the Fourth Proportional to 561,211.12, 772,896.90 and 525,190.42

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Solution

The fourth proportional to 561,211.12, 772,896.90 and 525,190.42 is: 723,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,211.12 : 772,896.90 = 525,190.42 : x
  2. Step 2: Convert to fraction form
    561,211.12/772,896.90 = 525,190.42/x
  3. Step 3: Cross multiply
    561,211.12x = 772,896.90 × 525,190.42
  4. Step 4: Simplify right side
    561,211.12x = 405,918,047,527.70
  5. Step 5: Solve for x
    x = 405,918,047,527.70/561,211.12
  6. Step 6: Final answer
    x = 723,289.39

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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.