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Finding the Fourth Proportional to 91,907.42, 126,825.93 and 51,624.90

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Solution

The fourth proportional to 91,907.42, 126,825.93 and 51,624.90 is: 71,238.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,907.42 : 126,825.93 = 51,624.90 : x
  2. Step 2: Convert to fraction form
    91,907.42/126,825.93 = 51,624.90/x
  3. Step 3: Cross multiply
    91,907.42x = 126,825.93 × 51,624.90
  4. Step 4: Simplify right side
    91,907.42x = 6,547,375,953.66
  5. Step 5: Solve for x
    x = 6,547,375,953.66/91,907.42
  6. Step 6: Final answer
    x = 71,238.82

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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.