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Finding the Fourth Proportional to 12,335.40, 16,665.75 and 12,335.40

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Solution

The fourth proportional to 12,335.40, 16,665.75 and 12,335.40 is: 16,665.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,335.40 : 16,665.75 = 12,335.40 : x
  2. Step 2: Convert to fraction form
    12,335.40/16,665.75 = 12,335.40/x
  3. Step 3: Cross multiply
    12,335.40x = 16,665.75 × 12,335.40
  4. Step 4: Simplify right side
    12,335.40x = 205,578,692.55
  5. Step 5: Solve for x
    x = 205,578,692.55/12,335.40
  6. Step 6: Final answer
    x = 16,665.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.