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Finding the Fourth Proportional to 8,555.80, 11,807.46 and 5,019.32

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Solution

The fourth proportional to 8,555.80, 11,807.46 and 5,019.32 is: 6,926.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.80 : 11,807.46 = 5,019.32 : x
  2. Step 2: Convert to fraction form
    8,555.80/11,807.46 = 5,019.32/x
  3. Step 3: Cross multiply
    8,555.80x = 11,807.46 × 5,019.32
  4. Step 4: Simplify right side
    8,555.80x = 59,265,420.13
  5. Step 5: Solve for x
    x = 59,265,420.13/8,555.80
  6. Step 6: Final answer
    x = 6,926.93

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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.