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Finding the Fourth Proportional to 572,605.80, 858,908.70 and 404,644.20

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Solution

The fourth proportional to 572,605.80, 858,908.70 and 404,644.20 is: 606,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,605.80 : 858,908.70 = 404,644.20 : x
  2. Step 2: Convert to fraction form
    572,605.80/858,908.70 = 404,644.20/x
  3. Step 3: Cross multiply
    572,605.80x = 858,908.70 × 404,644.20
  4. Step 4: Simplify right side
    572,605.80x = 347,552,423,784.54
  5. Step 5: Solve for x
    x = 347,552,423,784.54/572,605.80
  6. Step 6: Final answer
    x = 606,966.30

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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.