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Finding the Fourth Proportional to 586,072.80, 879,109.20 and 165,343.20

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Solution

The fourth proportional to 586,072.80, 879,109.20 and 165,343.20 is: 248,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,072.80 : 879,109.20 = 165,343.20 : x
  2. Step 2: Convert to fraction form
    586,072.80/879,109.20 = 165,343.20/x
  3. Step 3: Cross multiply
    586,072.80x = 879,109.20 × 165,343.20
  4. Step 4: Simplify right side
    586,072.80x = 145,354,728,277.44
  5. Step 5: Solve for x
    x = 145,354,728,277.44/586,072.80
  6. Step 6: Final answer
    x = 248,014.80

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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.