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Finding the Fourth Proportional to 39,681.60, 59,529.60 and 19,910.40

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Solution

The fourth proportional to 39,681.60, 59,529.60 and 19,910.40 is: 29,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.60 : 59,529.60 = 19,910.40 : x
  2. Step 2: Convert to fraction form
    39,681.60/59,529.60 = 19,910.40/x
  3. Step 3: Cross multiply
    39,681.60x = 59,529.60 × 19,910.40
  4. Step 4: Simplify right side
    39,681.60x = 1,185,258,147.84
  5. Step 5: Solve for x
    x = 1,185,258,147.84/39,681.60
  6. Step 6: Final answer
    x = 29,869.21

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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.