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Finding the Fourth Proportional to 38,699.57, 58,054.83 and 12,398.16

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Solution

The fourth proportional to 38,699.57, 58,054.83 and 12,398.16 is: 18,599.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,699.57 : 58,054.83 = 12,398.16 : x
  2. Step 2: Convert to fraction form
    38,699.57/58,054.83 = 12,398.16/x
  3. Step 3: Cross multiply
    38,699.57x = 58,054.83 × 12,398.16
  4. Step 4: Simplify right side
    38,699.57x = 719,773,242.33
  5. Step 5: Solve for x
    x = 719,773,242.33/38,699.57
  6. Step 6: Final answer
    x = 18,599.00

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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.