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Finding the Fourth Proportional to 89,913, 124,079.94 and 50,169

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Solution

The fourth proportional to 89,913, 124,079.94 and 50,169 is: 69,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,913 : 124,079.94 = 50,169 : x
  2. Step 2: Convert to fraction form
    89,913/124,079.94 = 50,169/x
  3. Step 3: Cross multiply
    89,913x = 124,079.94 × 50,169
  4. Step 4: Simplify right side
    89,913x = 6,224,966,509.86
  5. Step 5: Solve for x
    x = 6,224,966,509.86/89,913
  6. Step 6: Final answer
    x = 69,233.22

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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.