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Finding the Fourth Proportional to 71,379.34, 98,458.92 and 45,918.94

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Solution

The fourth proportional to 71,379.34, 98,458.92 and 45,918.94 is: 63,339.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,379.34 : 98,458.92 = 45,918.94 : x
  2. Step 2: Convert to fraction form
    71,379.34/98,458.92 = 45,918.94/x
  3. Step 3: Cross multiply
    71,379.34x = 98,458.92 × 45,918.94
  4. Step 4: Simplify right side
    71,379.34x = 4,521,129,239.94
  5. Step 5: Solve for x
    x = 4,521,129,239.94/71,379.34
  6. Step 6: Final answer
    x = 63,339.47

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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.