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Finding the Fourth Proportional to 467,526.80, 701,290.20 and 172,000.40

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Solution

The fourth proportional to 467,526.80, 701,290.20 and 172,000.40 is: 258,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,526.80 : 701,290.20 = 172,000.40 : x
  2. Step 2: Convert to fraction form
    467,526.80/701,290.20 = 172,000.40/x
  3. Step 3: Cross multiply
    467,526.80x = 701,290.20 × 172,000.40
  4. Step 4: Simplify right side
    467,526.80x = 120,622,194,916.08
  5. Step 5: Solve for x
    x = 120,622,194,916.08/467,526.80
  6. Step 6: Final answer
    x = 258,000.60

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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.