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Finding the Fourth Proportional to 7,914.48, 11,870.88 and 2,070.32

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Solution

The fourth proportional to 7,914.48, 11,870.88 and 2,070.32 is: 3,105.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,914.48 : 11,870.88 = 2,070.32 : x
  2. Step 2: Convert to fraction form
    7,914.48/11,870.88 = 2,070.32/x
  3. Step 3: Cross multiply
    7,914.48x = 11,870.88 × 2,070.32
  4. Step 4: Simplify right side
    7,914.48x = 24,576,520.28
  5. Step 5: Solve for x
    x = 24,576,520.28/7,914.48
  6. Step 6: Final answer
    x = 3,105.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.