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Finding the Fourth Proportional to 18,907.53, 28,354.92 and 7,058.85

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Solution

The fourth proportional to 18,907.53, 28,354.92 and 7,058.85 is: 10,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.53 : 28,354.92 = 7,058.85 : x
  2. Step 2: Convert to fraction form
    18,907.53/28,354.92 = 7,058.85/x
  3. Step 3: Cross multiply
    18,907.53x = 28,354.92 × 7,058.85
  4. Step 4: Simplify right side
    18,907.53x = 200,153,253.34
  5. Step 5: Solve for x
    x = 200,153,253.34/18,907.53
  6. Step 6: Final answer
    x = 10,585.90

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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.