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Finding the Fourth Proportional to 12,456.06, 18,684.06 and 5,058.78

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Solution

The fourth proportional to 12,456.06, 18,684.06 and 5,058.78 is: 7,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.06 : 18,684.06 = 5,058.78 : x
  2. Step 2: Convert to fraction form
    12,456.06/18,684.06 = 5,058.78/x
  3. Step 3: Cross multiply
    12,456.06x = 18,684.06 × 5,058.78
  4. Step 4: Simplify right side
    12,456.06x = 94,518,530.08
  5. Step 5: Solve for x
    x = 94,518,530.08/12,456.06
  6. Step 6: Final answer
    x = 7,588.16

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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.