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Finding the Fourth Proportional to 84,881.66, 117,124.18 and 47,155.91

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Solution

The fourth proportional to 84,881.66, 117,124.18 and 47,155.91 is: 65,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,881.66 : 117,124.18 = 47,155.91 : x
  2. Step 2: Convert to fraction form
    84,881.66/117,124.18 = 47,155.91/x
  3. Step 3: Cross multiply
    84,881.66x = 117,124.18 × 47,155.91
  4. Step 4: Simplify right side
    84,881.66x = 5,523,096,587.39
  5. Step 5: Solve for x
    x = 5,523,096,587.39/84,881.66
  6. Step 6: Final answer
    x = 65,068.20

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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.