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Finding the Fourth Proportional to 134,107.76, 185,063.64 and 74,495.60

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Solution

The fourth proportional to 134,107.76, 185,063.64 and 74,495.60 is: 102,801.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,107.76 : 185,063.64 = 74,495.60 : x
  2. Step 2: Convert to fraction form
    134,107.76/185,063.64 = 74,495.60/x
  3. Step 3: Cross multiply
    134,107.76x = 185,063.64 × 74,495.60
  4. Step 4: Simplify right side
    134,107.76x = 13,786,426,899.98
  5. Step 5: Solve for x
    x = 13,786,426,899.98/134,107.76
  6. Step 6: Final answer
    x = 102,801.11

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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.