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Finding the Fourth Proportional to 73,030.87, 100,783.90 and 42,837.96

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Solution

The fourth proportional to 73,030.87, 100,783.90 and 42,837.96 is: 59,117.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,030.87 : 100,783.90 = 42,837.96 : x
  2. Step 2: Convert to fraction form
    73,030.87/100,783.90 = 42,837.96/x
  3. Step 3: Cross multiply
    73,030.87x = 100,783.90 × 42,837.96
  4. Step 4: Simplify right side
    73,030.87x = 4,317,376,867.37
  5. Step 5: Solve for x
    x = 4,317,376,867.37/73,030.87
  6. Step 6: Final answer
    x = 59,117.15

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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.