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Finding the Fourth Proportional to 8,807.30, 12,154.32 and 4,828.40

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Solution

The fourth proportional to 8,807.30, 12,154.32 and 4,828.40 is: 6,663.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.30 : 12,154.32 = 4,828.40 : x
  2. Step 2: Convert to fraction form
    8,807.30/12,154.32 = 4,828.40/x
  3. Step 3: Cross multiply
    8,807.30x = 12,154.32 × 4,828.40
  4. Step 4: Simplify right side
    8,807.30x = 58,685,918.69
  5. Step 5: Solve for x
    x = 58,685,918.69/8,807.30
  6. Step 6: Final answer
    x = 6,663.33

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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.