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Finding the Fourth Proportional to 128,151.64, 191,848.94 and 94,649.24

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Solution

The fourth proportional to 128,151.64, 191,848.94 and 94,649.24 is: 141,694.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.64 : 191,848.94 = 94,649.24 : x
  2. Step 2: Convert to fraction form
    128,151.64/191,848.94 = 94,649.24/x
  3. Step 3: Cross multiply
    128,151.64x = 191,848.94 × 94,649.24
  4. Step 4: Simplify right side
    128,151.64x = 18,158,356,365.81
  5. Step 5: Solve for x
    x = 18,158,356,365.81/128,151.64
  6. Step 6: Final answer
    x = 141,694.30

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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.