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Finding the Fourth Proportional to 73,030.80, 109,427.40 and 66,032.40

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Solution

The fourth proportional to 73,030.80, 109,427.40 and 66,032.40 is: 98,941.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,030.80 : 109,427.40 = 66,032.40 : x
  2. Step 2: Convert to fraction form
    73,030.80/109,427.40 = 66,032.40/x
  3. Step 3: Cross multiply
    73,030.80x = 109,427.40 × 66,032.40
  4. Step 4: Simplify right side
    73,030.80x = 7,225,753,847.76
  5. Step 5: Solve for x
    x = 7,225,753,847.76/73,030.80
  6. Step 6: Final answer
    x = 98,941.18

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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.