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Finding the Fourth Proportional to 23,140.40, 34,710.60 and 19,799.60

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Solution

The fourth proportional to 23,140.40, 34,710.60 and 19,799.60 is: 29,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,140.40 : 34,710.60 = 19,799.60 : x
  2. Step 2: Convert to fraction form
    23,140.40/34,710.60 = 19,799.60/x
  3. Step 3: Cross multiply
    23,140.40x = 34,710.60 × 19,799.60
  4. Step 4: Simplify right side
    23,140.40x = 687,255,995.76
  5. Step 5: Solve for x
    x = 687,255,995.76/23,140.40
  6. Step 6: Final answer
    x = 29,699.40

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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.