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Finding the Fourth Proportional to 590,509.20, 885,763.80 and 472,411.20

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Solution

The fourth proportional to 590,509.20, 885,763.80 and 472,411.20 is: 708,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,509.20 : 885,763.80 = 472,411.20 : x
  2. Step 2: Convert to fraction form
    590,509.20/885,763.80 = 472,411.20/x
  3. Step 3: Cross multiply
    590,509.20x = 885,763.80 × 472,411.20
  4. Step 4: Simplify right side
    590,509.20x = 418,444,739,674.56
  5. Step 5: Solve for x
    x = 418,444,739,674.56/590,509.20
  6. Step 6: Final answer
    x = 708,616.80

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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.