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Finding the Fourth Proportional to 38,643.60, 57,918.60 and 16,410.30

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Solution

The fourth proportional to 38,643.60, 57,918.60 and 16,410.30 is: 24,595.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,643.60 : 57,918.60 = 16,410.30 : x
  2. Step 2: Convert to fraction form
    38,643.60/57,918.60 = 16,410.30/x
  3. Step 3: Cross multiply
    38,643.60x = 57,918.60 × 16,410.30
  4. Step 4: Simplify right side
    38,643.60x = 950,461,601.58
  5. Step 5: Solve for x
    x = 950,461,601.58/38,643.60
  6. Step 6: Final answer
    x = 24,595.58

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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.