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Finding the Fourth Proportional to 28,058.42, 42,091.88 and 8,334.51

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Solution

The fourth proportional to 28,058.42, 42,091.88 and 8,334.51 is: 12,503.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,058.42 : 42,091.88 = 8,334.51 : x
  2. Step 2: Convert to fraction form
    28,058.42/42,091.88 = 8,334.51/x
  3. Step 3: Cross multiply
    28,058.42x = 42,091.88 × 8,334.51
  4. Step 4: Simplify right side
    28,058.42x = 350,815,153.11
  5. Step 5: Solve for x
    x = 350,815,153.11/28,058.42
  6. Step 6: Final answer
    x = 12,503.03

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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.