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Finding the Fourth Proportional to 76,111.80, 105,076.51 and 45,904.74

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Solution

The fourth proportional to 76,111.80, 105,076.51 and 45,904.74 is: 63,374.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,111.80 : 105,076.51 = 45,904.74 : x
  2. Step 2: Convert to fraction form
    76,111.80/105,076.51 = 45,904.74/x
  3. Step 3: Cross multiply
    76,111.80x = 105,076.51 × 45,904.74
  4. Step 4: Simplify right side
    76,111.80x = 4,823,509,871.66
  5. Step 5: Solve for x
    x = 4,823,509,871.66/76,111.80
  6. Step 6: Final answer
    x = 63,374.01

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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.