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Finding the Fourth Proportional to 23,893.76, 32,878.88 and 21,658.16

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Solution

The fourth proportional to 23,893.76, 32,878.88 and 21,658.16 is: 29,802.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,893.76 : 32,878.88 = 21,658.16 : x
  2. Step 2: Convert to fraction form
    23,893.76/32,878.88 = 21,658.16/x
  3. Step 3: Cross multiply
    23,893.76x = 32,878.88 × 21,658.16
  4. Step 4: Simplify right side
    23,893.76x = 712,096,043.66
  5. Step 5: Solve for x
    x = 712,096,043.66/23,893.76
  6. Step 6: Final answer
    x = 29,802.59

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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.