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Finding the Fourth Proportional to 117,898.47, 176,750.71 and 67,240.67

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Solution

The fourth proportional to 117,898.47, 176,750.71 and 67,240.67 is: 100,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,898.47 : 176,750.71 = 67,240.67 : x
  2. Step 2: Convert to fraction form
    117,898.47/176,750.71 = 67,240.67/x
  3. Step 3: Cross multiply
    117,898.47x = 176,750.71 × 67,240.67
  4. Step 4: Simplify right side
    117,898.47x = 11,884,835,111.52
  5. Step 5: Solve for x
    x = 11,884,835,111.52/117,898.47
  6. Step 6: Final answer
    x = 100,805.68

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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.