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Finding the Fourth Proportional to 590,907.30, 885,324.15 and 485,153.70

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Solution

The fourth proportional to 590,907.30, 885,324.15 and 485,153.70 is: 726,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,907.30 : 885,324.15 = 485,153.70 : x
  2. Step 2: Convert to fraction form
    590,907.30/885,324.15 = 485,153.70/x
  3. Step 3: Cross multiply
    590,907.30x = 885,324.15 × 485,153.70
  4. Step 4: Simplify right side
    590,907.30x = 429,518,287,071.86
  5. Step 5: Solve for x
    x = 429,518,287,071.86/590,907.30
  6. Step 6: Final answer
    x = 726,879.30

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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.