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Finding the Fourth Proportional to 15,698.72, 23,559.96 and 7,914.08

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Solution

The fourth proportional to 15,698.72, 23,559.96 and 7,914.08 is: 11,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,698.72 : 23,559.96 = 7,914.08 : x
  2. Step 2: Convert to fraction form
    15,698.72/23,559.96 = 7,914.08/x
  3. Step 3: Cross multiply
    15,698.72x = 23,559.96 × 7,914.08
  4. Step 4: Simplify right side
    15,698.72x = 186,455,408.24
  5. Step 5: Solve for x
    x = 186,455,408.24/15,698.72
  6. Step 6: Final answer
    x = 11,877.11

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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.