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Finding the Fourth Proportional to 572,010.74, 857,679.66 and 217,049.71

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Solution

The fourth proportional to 572,010.74, 857,679.66 and 217,049.71 is: 325,446.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,010.74 : 857,679.66 = 217,049.71 : x
  2. Step 2: Convert to fraction form
    572,010.74/857,679.66 = 217,049.71/x
  3. Step 3: Cross multiply
    572,010.74x = 857,679.66 × 217,049.71
  4. Step 4: Simplify right side
    572,010.74x = 186,159,117,187.50
  5. Step 5: Solve for x
    x = 186,159,117,187.50/572,010.74
  6. Step 6: Final answer
    x = 325,446.89

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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.