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Finding the Fourth Proportional to 8,907.29, 12,291.99 and 4,928.31

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Solution

The fourth proportional to 8,907.29, 12,291.99 and 4,928.31 is: 6,801.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.29 : 12,291.99 = 4,928.31 : x
  2. Step 2: Convert to fraction form
    8,907.29/12,291.99 = 4,928.31/x
  3. Step 3: Cross multiply
    8,907.29x = 12,291.99 × 4,928.31
  4. Step 4: Simplify right side
    8,907.29x = 60,578,737.24
  5. Step 5: Solve for x
    x = 60,578,737.24/8,907.29
  6. Step 6: Final answer
    x = 6,801.03

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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.