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Finding the Fourth Proportional to 577,286.76, 865,620.72 and 289,053.12

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Solution

The fourth proportional to 577,286.76, 865,620.72 and 289,053.12 is: 433,424.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,286.76 : 865,620.72 = 289,053.12 : x
  2. Step 2: Convert to fraction form
    577,286.76/865,620.72 = 289,053.12/x
  3. Step 3: Cross multiply
    577,286.76x = 865,620.72 × 289,053.12
  4. Step 4: Simplify right side
    577,286.76x = 250,210,369,852.65
  5. Step 5: Solve for x
    x = 250,210,369,852.65/577,286.76
  6. Step 6: Final answer
    x = 433,424.75

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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.