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Finding the Fourth Proportional to 393,338.56, 589,920.01 and 153,458.85

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Solution

The fourth proportional to 393,338.56, 589,920.01 and 153,458.85 is: 230,154.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,338.56 : 589,920.01 = 153,458.85 : x
  2. Step 2: Convert to fraction form
    393,338.56/589,920.01 = 153,458.85/x
  3. Step 3: Cross multiply
    393,338.56x = 589,920.01 × 153,458.85
  4. Step 4: Simplify right side
    393,338.56x = 90,528,445,559.29
  5. Step 5: Solve for x
    x = 90,528,445,559.29/393,338.56
  6. Step 6: Final answer
    x = 230,154.01

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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.