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Finding the Fourth Proportional to 147,943.80, 221,915.70 and 147,943.80

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Solution

The fourth proportional to 147,943.80, 221,915.70 and 147,943.80 is: 221,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,943.80 : 221,915.70 = 147,943.80 : x
  2. Step 2: Convert to fraction form
    147,943.80/221,915.70 = 147,943.80/x
  3. Step 3: Cross multiply
    147,943.80x = 221,915.70 × 147,943.80
  4. Step 4: Simplify right side
    147,943.80x = 32,831,051,937.66
  5. Step 5: Solve for x
    x = 32,831,051,937.66/147,943.80
  6. Step 6: Final answer
    x = 221,915.70

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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.