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Finding the Fourth Proportional to 8,933.78, 13,431.05 and 7,302.17

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Solution

The fourth proportional to 8,933.78, 13,431.05 and 7,302.17 is: 10,978.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,933.78 : 13,431.05 = 7,302.17 : x
  2. Step 2: Convert to fraction form
    8,933.78/13,431.05 = 7,302.17/x
  3. Step 3: Cross multiply
    8,933.78x = 13,431.05 × 7,302.17
  4. Step 4: Simplify right side
    8,933.78x = 98,075,706.71
  5. Step 5: Solve for x
    x = 98,075,706.71/8,933.78
  6. Step 6: Final answer
    x = 10,978.08

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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.