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Finding the Fourth Proportional to 118,477.74, 163,472.94 and 68,176.74

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Solution

The fourth proportional to 118,477.74, 163,472.94 and 68,176.74 is: 94,068.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,477.74 : 163,472.94 = 68,176.74 : x
  2. Step 2: Convert to fraction form
    118,477.74/163,472.94 = 68,176.74/x
  3. Step 3: Cross multiply
    118,477.74x = 163,472.94 × 68,176.74
  4. Step 4: Simplify right side
    118,477.74x = 11,145,052,127.42
  5. Step 5: Solve for x
    x = 11,145,052,127.42/118,477.74
  6. Step 6: Final answer
    x = 94,068.74

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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.