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Finding the Fourth Proportional to 5,415.59, 7,473.48 and 2,931.59

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Solution

The fourth proportional to 5,415.59, 7,473.48 and 2,931.59 is: 4,045.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.59 : 7,473.48 = 2,931.59 : x
  2. Step 2: Convert to fraction form
    5,415.59/7,473.48 = 2,931.59/x
  3. Step 3: Cross multiply
    5,415.59x = 7,473.48 × 2,931.59
  4. Step 4: Simplify right side
    5,415.59x = 21,909,141.87
  5. Step 5: Solve for x
    x = 21,909,141.87/5,415.59
  6. Step 6: Final answer
    x = 4,045.57

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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.