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Finding the Fourth Proportional to 65,907.69, 90,953.87 and 36,099.69

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Solution

The fourth proportional to 65,907.69, 90,953.87 and 36,099.69 is: 49,818.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,907.69 : 90,953.87 = 36,099.69 : x
  2. Step 2: Convert to fraction form
    65,907.69/90,953.87 = 36,099.69/x
  3. Step 3: Cross multiply
    65,907.69x = 90,953.87 × 36,099.69
  4. Step 4: Simplify right side
    65,907.69x = 3,283,406,330.80
  5. Step 5: Solve for x
    x = 3,283,406,330.80/65,907.69
  6. Step 6: Final answer
    x = 49,818.26

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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.