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Finding the Fourth Proportional to 39,812.40, 59,718.60 and 16,455.60

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Solution

The fourth proportional to 39,812.40, 59,718.60 and 16,455.60 is: 24,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,812.40 : 59,718.60 = 16,455.60 : x
  2. Step 2: Convert to fraction form
    39,812.40/59,718.60 = 16,455.60/x
  3. Step 3: Cross multiply
    39,812.40x = 59,718.60 × 16,455.60
  4. Step 4: Simplify right side
    39,812.40x = 982,705,394.16
  5. Step 5: Solve for x
    x = 982,705,394.16/39,812.40
  6. Step 6: Final answer
    x = 24,683.40

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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.