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Finding the Fourth Proportional to 8,931.85, 13,384.95 and 5,028.01

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Solution

The fourth proportional to 8,931.85, 13,384.95 and 5,028.01 is: 7,534.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.85 : 13,384.95 = 5,028.01 : x
  2. Step 2: Convert to fraction form
    8,931.85/13,384.95 = 5,028.01/x
  3. Step 3: Cross multiply
    8,931.85x = 13,384.95 × 5,028.01
  4. Step 4: Simplify right side
    8,931.85x = 67,299,662.45
  5. Step 5: Solve for x
    x = 67,299,662.45/8,931.85
  6. Step 6: Final answer
    x = 7,534.80

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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.