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Finding the Fourth Proportional to 18,710.35, 28,041.15 and 7,604.06

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Solution

The fourth proportional to 18,710.35, 28,041.15 and 7,604.06 is: 11,396.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.35 : 28,041.15 = 7,604.06 : x
  2. Step 2: Convert to fraction form
    18,710.35/28,041.15 = 7,604.06/x
  3. Step 3: Cross multiply
    18,710.35x = 28,041.15 × 7,604.06
  4. Step 4: Simplify right side
    18,710.35x = 213,226,587.07
  5. Step 5: Solve for x
    x = 213,226,587.07/18,710.35
  6. Step 6: Final answer
    x = 11,396.18

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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.