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Finding the Fourth Proportional to 117,908.16, 176,676.48 and 70,406.88

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Solution

The fourth proportional to 117,908.16, 176,676.48 and 70,406.88 is: 105,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,908.16 : 176,676.48 = 70,406.88 : x
  2. Step 2: Convert to fraction form
    117,908.16/176,676.48 = 70,406.88/x
  3. Step 3: Cross multiply
    117,908.16x = 176,676.48 × 70,406.88
  4. Step 4: Simplify right side
    117,908.16x = 12,439,239,726.18
  5. Step 5: Solve for x
    x = 12,439,239,726.18/117,908.16
  6. Step 6: Final answer
    x = 105,499.40

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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.