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Finding the Fourth Proportional to 117,798.60, 176,309.10 and 91,360.20

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Solution

The fourth proportional to 117,798.60, 176,309.10 and 91,360.20 is: 136,738.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,798.60 : 176,309.10 = 91,360.20 : x
  2. Step 2: Convert to fraction form
    117,798.60/176,309.10 = 91,360.20/x
  3. Step 3: Cross multiply
    117,798.60x = 176,309.10 × 91,360.20
  4. Step 4: Simplify right side
    117,798.60x = 16,107,634,637.82
  5. Step 5: Solve for x
    x = 16,107,634,637.82/117,798.60
  6. Step 6: Final answer
    x = 136,738.76

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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.