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Finding the Fourth Proportional to 23,530.61, 32,472.07 and 12,920.01

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Solution

The fourth proportional to 23,530.61, 32,472.07 and 12,920.01 is: 17,829.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,530.61 : 32,472.07 = 12,920.01 : x
  2. Step 2: Convert to fraction form
    23,530.61/32,472.07 = 12,920.01/x
  3. Step 3: Cross multiply
    23,530.61x = 32,472.07 × 12,920.01
  4. Step 4: Simplify right side
    23,530.61x = 419,539,469.12
  5. Step 5: Solve for x
    x = 419,539,469.12/23,530.61
  6. Step 6: Final answer
    x = 17,829.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.