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Finding the Fourth Proportional to 106,421.60, 159,619.60 and 44,085.60

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Solution

The fourth proportional to 106,421.60, 159,619.60 and 44,085.60 is: 66,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,421.60 : 159,619.60 = 44,085.60 : x
  2. Step 2: Convert to fraction form
    106,421.60/159,619.60 = 44,085.60/x
  3. Step 3: Cross multiply
    106,421.60x = 159,619.60 × 44,085.60
  4. Step 4: Simplify right side
    106,421.60x = 7,036,925,837.76
  5. Step 5: Solve for x
    x = 7,036,925,837.76/106,421.60
  6. Step 6: Final answer
    x = 66,123.10

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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.