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Finding the Fourth Proportional to 32,931.36, 49,401.90 and 15,399.72

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Solution

The fourth proportional to 32,931.36, 49,401.90 and 15,399.72 is: 23,101.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,931.36 : 49,401.90 = 15,399.72 : x
  2. Step 2: Convert to fraction form
    32,931.36/49,401.90 = 15,399.72/x
  3. Step 3: Cross multiply
    32,931.36x = 49,401.90 × 15,399.72
  4. Step 4: Simplify right side
    32,931.36x = 760,775,427.47
  5. Step 5: Solve for x
    x = 760,775,427.47/32,931.36
  6. Step 6: Final answer
    x = 23,101.85

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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.