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Finding the Fourth Proportional to 73,140.84, 109,710.45 and 23,219.60

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Solution

The fourth proportional to 73,140.84, 109,710.45 and 23,219.60 is: 34,829.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,140.84 : 109,710.45 = 23,219.60 : x
  2. Step 2: Convert to fraction form
    73,140.84/109,710.45 = 23,219.60/x
  3. Step 3: Cross multiply
    73,140.84x = 109,710.45 × 23,219.60
  4. Step 4: Simplify right side
    73,140.84x = 2,547,432,216.27
  5. Step 5: Solve for x
    x = 2,547,432,216.27/73,140.84
  6. Step 6: Final answer
    x = 34,829.14

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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.