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Finding the Fourth Proportional to 9,805.10, 13,531.18 and 5,328.94

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Solution

The fourth proportional to 9,805.10, 13,531.18 and 5,328.94 is: 7,354.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,805.10 : 13,531.18 = 5,328.94 : x
  2. Step 2: Convert to fraction form
    9,805.10/13,531.18 = 5,328.94/x
  3. Step 3: Cross multiply
    9,805.10x = 13,531.18 × 5,328.94
  4. Step 4: Simplify right side
    9,805.10x = 72,106,846.35
  5. Step 5: Solve for x
    x = 72,106,846.35/9,805.10
  6. Step 6: Final answer
    x = 7,354.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.