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Finding the Fourth Proportional to 147,468.40, 221,202.60 and 124,428.40

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Solution

The fourth proportional to 147,468.40, 221,202.60 and 124,428.40 is: 186,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,468.40 : 221,202.60 = 124,428.40 : x
  2. Step 2: Convert to fraction form
    147,468.40/221,202.60 = 124,428.40/x
  3. Step 3: Cross multiply
    147,468.40x = 221,202.60 × 124,428.40
  4. Step 4: Simplify right side
    147,468.40x = 27,523,885,593.84
  5. Step 5: Solve for x
    x = 27,523,885,593.84/147,468.40
  6. Step 6: Final answer
    x = 186,642.60

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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.