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Finding the Fourth Proportional to 73,231.80, 109,701.90 and 42,030.60

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Solution

The fourth proportional to 73,231.80, 109,701.90 and 42,030.60 is: 62,962.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,231.80 : 109,701.90 = 42,030.60 : x
  2. Step 2: Convert to fraction form
    73,231.80/109,701.90 = 42,030.60/x
  3. Step 3: Cross multiply
    73,231.80x = 109,701.90 × 42,030.60
  4. Step 4: Simplify right side
    73,231.80x = 4,610,836,678.14
  5. Step 5: Solve for x
    x = 4,610,836,678.14/73,231.80
  6. Step 6: Final answer
    x = 62,962.22

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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.