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Finding the Fourth Proportional to 38,705.49, 58,058.78 and 11,003.49

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Solution

The fourth proportional to 38,705.49, 58,058.78 and 11,003.49 is: 16,505.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,705.49 : 58,058.78 = 11,003.49 : x
  2. Step 2: Convert to fraction form
    38,705.49/58,058.78 = 11,003.49/x
  3. Step 3: Cross multiply
    38,705.49x = 58,058.78 × 11,003.49
  4. Step 4: Simplify right side
    38,705.49x = 638,849,150.12
  5. Step 5: Solve for x
    x = 638,849,150.12/38,705.49
  6. Step 6: Final answer
    x = 16,505.39

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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.