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Finding the Fourth Proportional to 77,957.15, 116,935.47 and 28,037.17

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Solution

The fourth proportional to 77,957.15, 116,935.47 and 28,037.17 is: 42,055.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,957.15 : 116,935.47 = 28,037.17 : x
  2. Step 2: Convert to fraction form
    77,957.15/116,935.47 = 28,037.17/x
  3. Step 3: Cross multiply
    77,957.15x = 116,935.47 × 28,037.17
  4. Step 4: Simplify right side
    77,957.15x = 3,278,539,629.78
  5. Step 5: Solve for x
    x = 3,278,539,629.78/77,957.15
  6. Step 6: Final answer
    x = 42,055.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.