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Finding the Fourth Proportional to 8,807.20, 12,153.86 and 4,828.30

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Solution

The fourth proportional to 8,807.20, 12,153.86 and 4,828.30 is: 6,663.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.20 : 12,153.86 = 4,828.30 : x
  2. Step 2: Convert to fraction form
    8,807.20/12,153.86 = 4,828.30/x
  3. Step 3: Cross multiply
    8,807.20x = 12,153.86 × 4,828.30
  4. Step 4: Simplify right side
    8,807.20x = 58,682,482.24
  5. Step 5: Solve for x
    x = 58,682,482.24/8,807.20
  6. Step 6: Final answer
    x = 6,663.01

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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.