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Finding the Fourth Proportional to 572,555.70, 859,161.60 and 217,824.30

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Solution

The fourth proportional to 572,555.70, 859,161.60 and 217,824.30 is: 326,861.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,555.70 : 859,161.60 = 217,824.30 : x
  2. Step 2: Convert to fraction form
    572,555.70/859,161.60 = 217,824.30/x
  3. Step 3: Cross multiply
    572,555.70x = 859,161.60 × 217,824.30
  4. Step 4: Simplify right side
    572,555.70x = 187,146,274,106.88
  5. Step 5: Solve for x
    x = 187,146,274,106.88/572,555.70
  6. Step 6: Final answer
    x = 326,861.25

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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.