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Finding the Fourth Proportional to 84,978.48, 117,267.60 and 46,737.76

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Solution

The fourth proportional to 84,978.48, 117,267.60 and 46,737.76 is: 64,496.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,978.48 : 117,267.60 = 46,737.76 : x
  2. Step 2: Convert to fraction form
    84,978.48/117,267.60 = 46,737.76/x
  3. Step 3: Cross multiply
    84,978.48x = 117,267.60 × 46,737.76
  4. Step 4: Simplify right side
    84,978.48x = 5,480,824,944.58
  5. Step 5: Solve for x
    x = 5,480,824,944.58/84,978.48
  6. Step 6: Final answer
    x = 64,496.62

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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.