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Finding the Fourth Proportional to 134,878.60, 202,317.90 and 129,694.60

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Solution

The fourth proportional to 134,878.60, 202,317.90 and 129,694.60 is: 194,541.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,878.60 : 202,317.90 = 129,694.60 : x
  2. Step 2: Convert to fraction form
    134,878.60/202,317.90 = 129,694.60/x
  3. Step 3: Cross multiply
    134,878.60x = 202,317.90 × 129,694.60
  4. Step 4: Simplify right side
    134,878.60x = 26,239,539,113.34
  5. Step 5: Solve for x
    x = 26,239,539,113.34/134,878.60
  6. Step 6: Final answer
    x = 194,541.90

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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.