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Finding the Fourth Proportional to 572,509.80, 858,764.70 and 198,532.80

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Solution

The fourth proportional to 572,509.80, 858,764.70 and 198,532.80 is: 297,799.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,509.80 : 858,764.70 = 198,532.80 : x
  2. Step 2: Convert to fraction form
    572,509.80/858,764.70 = 198,532.80/x
  3. Step 3: Cross multiply
    572,509.80x = 858,764.70 × 198,532.80
  4. Step 4: Simplify right side
    572,509.80x = 170,492,960,432.16
  5. Step 5: Solve for x
    x = 170,492,960,432.16/572,509.80
  6. Step 6: Final answer
    x = 297,799.20

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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.