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Finding the Fourth Proportional to 91,957.01, 126,904.39 and 51,670.64

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Solution

The fourth proportional to 91,957.01, 126,904.39 and 51,670.64 is: 71,307.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,957.01 : 126,904.39 = 51,670.64 : x
  2. Step 2: Convert to fraction form
    91,957.01/126,904.39 = 51,670.64/x
  3. Step 3: Cross multiply
    91,957.01x = 126,904.39 × 51,670.64
  4. Step 4: Simplify right side
    91,957.01x = 6,557,231,238.19
  5. Step 5: Solve for x
    x = 6,557,231,238.19/91,957.01
  6. Step 6: Final answer
    x = 71,307.58

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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.