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Finding the Fourth Proportional to 576,000.85, 864,001.28 and 543,341.65

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Solution

The fourth proportional to 576,000.85, 864,001.28 and 543,341.65 is: 815,012.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,000.85 : 864,001.28 = 543,341.65 : x
  2. Step 2: Convert to fraction form
    576,000.85/864,001.28 = 543,341.65/x
  3. Step 3: Cross multiply
    576,000.85x = 864,001.28 × 543,341.65
  4. Step 4: Simplify right side
    576,000.85x = 469,447,878,360.60
  5. Step 5: Solve for x
    x = 469,447,878,360.60/576,000.85
  6. Step 6: Final answer
    x = 815,012.48

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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.