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Finding the Fourth Proportional to 39,656.63, 59,443.16 and 15,980.99

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Solution

The fourth proportional to 39,656.63, 59,443.16 and 15,980.99 is: 23,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,656.63 : 59,443.16 = 15,980.99 : x
  2. Step 2: Convert to fraction form
    39,656.63/59,443.16 = 15,980.99/x
  3. Step 3: Cross multiply
    39,656.63x = 59,443.16 × 15,980.99
  4. Step 4: Simplify right side
    39,656.63x = 949,960,168.41
  5. Step 5: Solve for x
    x = 949,960,168.41/39,656.63
  6. Step 6: Final answer
    x = 23,954.64

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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.