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Finding the Fourth Proportional to 10,578.20, 14,840.20 and 10,578.20

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Solution

The fourth proportional to 10,578.20, 14,840.20 and 10,578.20 is: 14,840.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,578.20 : 14,840.20 = 10,578.20 : x
  2. Step 2: Convert to fraction form
    10,578.20/14,840.20 = 10,578.20/x
  3. Step 3: Cross multiply
    10,578.20x = 14,840.20 × 10,578.20
  4. Step 4: Simplify right side
    10,578.20x = 156,982,603.64
  5. Step 5: Solve for x
    x = 156,982,603.64/10,578.20
  6. Step 6: Final answer
    x = 14,840.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.