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Finding the Fourth Proportional to 117,803.61, 176,600.75 and 42,909.80

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Solution

The fourth proportional to 117,803.61, 176,600.75 and 42,909.80 is: 64,326.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,803.61 : 176,600.75 = 42,909.80 : x
  2. Step 2: Convert to fraction form
    117,803.61/176,600.75 = 42,909.80/x
  3. Step 3: Cross multiply
    117,803.61x = 176,600.75 × 42,909.80
  4. Step 4: Simplify right side
    117,803.61x = 7,577,901,764.80
  5. Step 5: Solve for x
    x = 7,577,901,764.80/117,803.61
  6. Step 6: Final answer
    x = 64,326.57

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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.