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Finding the Fourth Proportional to 84,486.64, 116,617.54 and 48,700.58

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Solution

The fourth proportional to 84,486.64, 116,617.54 and 48,700.58 is: 67,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,486.64 : 116,617.54 = 48,700.58 : x
  2. Step 2: Convert to fraction form
    84,486.64/116,617.54 = 48,700.58/x
  3. Step 3: Cross multiply
    84,486.64x = 116,617.54 × 48,700.58
  4. Step 4: Simplify right side
    84,486.64x = 5,679,341,836.17
  5. Step 5: Solve for x
    x = 5,679,341,836.17/84,486.64
  6. Step 6: Final answer
    x = 67,221.77

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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.