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Finding the Fourth Proportional to 23,721.48, 35,570.16 and 7,920.99

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Solution

The fourth proportional to 23,721.48, 35,570.16 and 7,920.99 is: 11,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,721.48 : 35,570.16 = 7,920.99 : x
  2. Step 2: Convert to fraction form
    23,721.48/35,570.16 = 7,920.99/x
  3. Step 3: Cross multiply
    23,721.48x = 35,570.16 × 7,920.99
  4. Step 4: Simplify right side
    23,721.48x = 281,750,881.66
  5. Step 5: Solve for x
    x = 281,750,881.66/23,721.48
  6. Step 6: Final answer
    x = 11,877.46

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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.