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Finding the Fourth Proportional to 5,368.69, 7,405.04 and 5,188.06

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Solution

The fourth proportional to 5,368.69, 7,405.04 and 5,188.06 is: 7,155.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,368.69 : 7,405.04 = 5,188.06 : x
  2. Step 2: Convert to fraction form
    5,368.69/7,405.04 = 5,188.06/x
  3. Step 3: Cross multiply
    5,368.69x = 7,405.04 × 5,188.06
  4. Step 4: Simplify right side
    5,368.69x = 38,417,791.82
  5. Step 5: Solve for x
    x = 38,417,791.82/5,368.69
  6. Step 6: Final answer
    x = 7,155.90

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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.