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Finding the Fourth Proportional to 8,942.40, 12,335.04 and 5,798.60

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Solution

The fourth proportional to 8,942.40, 12,335.04 and 5,798.60 is: 7,998.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,942.40 : 12,335.04 = 5,798.60 : x
  2. Step 2: Convert to fraction form
    8,942.40/12,335.04 = 5,798.60/x
  3. Step 3: Cross multiply
    8,942.40x = 12,335.04 × 5,798.60
  4. Step 4: Simplify right side
    8,942.40x = 71,525,962.94
  5. Step 5: Solve for x
    x = 71,525,962.94/8,942.40
  6. Step 6: Final answer
    x = 7,998.52

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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.