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Finding the Fourth Proportional to 38,703.94, 58,064.12 and 12,427.14

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Solution

The fourth proportional to 38,703.94, 58,064.12 and 12,427.14 is: 18,643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,703.94 : 58,064.12 = 12,427.14 : x
  2. Step 2: Convert to fraction form
    38,703.94/58,064.12 = 12,427.14/x
  3. Step 3: Cross multiply
    38,703.94x = 58,064.12 × 12,427.14
  4. Step 4: Simplify right side
    38,703.94x = 721,570,948.22
  5. Step 5: Solve for x
    x = 721,570,948.22/38,703.94
  6. Step 6: Final answer
    x = 18,643.35

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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.