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Finding the Fourth Proportional to 113,199, 156,219.75 and 62,898

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Solution

The fourth proportional to 113,199, 156,219.75 and 62,898 is: 86,802.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,199 : 156,219.75 = 62,898 : x
  2. Step 2: Convert to fraction form
    113,199/156,219.75 = 62,898/x
  3. Step 3: Cross multiply
    113,199x = 156,219.75 × 62,898
  4. Step 4: Simplify right side
    113,199x = 9,825,909,835.50
  5. Step 5: Solve for x
    x = 9,825,909,835.50/113,199
  6. Step 6: Final answer
    x = 86,802.09

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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.