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Finding the Fourth Proportional to 100,558.58, 138,835.76 and 62,358.71

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Solution

The fourth proportional to 100,558.58, 138,835.76 and 62,358.71 is: 86,095.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,558.58 : 138,835.76 = 62,358.71 : x
  2. Step 2: Convert to fraction form
    100,558.58/138,835.76 = 62,358.71/x
  3. Step 3: Cross multiply
    100,558.58x = 138,835.76 × 62,358.71
  4. Step 4: Simplify right side
    100,558.58x = 8,657,617,889.50
  5. Step 5: Solve for x
    x = 8,657,617,889.50/100,558.58
  6. Step 6: Final answer
    x = 86,095.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.