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Finding the Fourth Proportional to 69,897.76, 96,462.94 and 52,639.22

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Solution

The fourth proportional to 69,897.76, 96,462.94 and 52,639.22 is: 72,645.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,897.76 : 96,462.94 = 52,639.22 : x
  2. Step 2: Convert to fraction form
    69,897.76/96,462.94 = 52,639.22/x
  3. Step 3: Cross multiply
    69,897.76x = 96,462.94 × 52,639.22
  4. Step 4: Simplify right side
    69,897.76x = 5,077,733,920.51
  5. Step 5: Solve for x
    x = 5,077,733,920.51/69,897.76
  6. Step 6: Final answer
    x = 72,645.16

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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.