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Finding the Fourth Proportional to 65,015.90, 91,284.70 and 65,015.90

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Solution

The fourth proportional to 65,015.90, 91,284.70 and 65,015.90 is: 91,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,015.90 : 91,284.70 = 65,015.90 : x
  2. Step 2: Convert to fraction form
    65,015.90/91,284.70 = 65,015.90/x
  3. Step 3: Cross multiply
    65,015.90x = 91,284.70 × 65,015.90
  4. Step 4: Simplify right side
    65,015.90x = 5,934,956,926.73
  5. Step 5: Solve for x
    x = 5,934,956,926.73/65,015.90
  6. Step 6: Final answer
    x = 91,284.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.