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Finding the Fourth Proportional to 571,461.12, 857,198.16 and 216,378.72

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Solution

The fourth proportional to 571,461.12, 857,198.16 and 216,378.72 is: 324,570.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,461.12 : 857,198.16 = 216,378.72 : x
  2. Step 2: Convert to fraction form
    571,461.12/857,198.16 = 216,378.72/x
  3. Step 3: Cross multiply
    571,461.12x = 857,198.16 × 216,378.72
  4. Step 4: Simplify right side
    571,461.12x = 185,479,440,647.16
  5. Step 5: Solve for x
    x = 185,479,440,647.16/571,461.12
  6. Step 6: Final answer
    x = 324,570.53

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.