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Finding the Fourth Proportional to 109,953.40, 164,930.10 and 98,143.60

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Solution

The fourth proportional to 109,953.40, 164,930.10 and 98,143.60 is: 147,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,953.40 : 164,930.10 = 98,143.60 : x
  2. Step 2: Convert to fraction form
    109,953.40/164,930.10 = 98,143.60/x
  3. Step 3: Cross multiply
    109,953.40x = 164,930.10 × 98,143.60
  4. Step 4: Simplify right side
    109,953.40x = 16,186,833,762.36
  5. Step 5: Solve for x
    x = 16,186,833,762.36/109,953.40
  6. Step 6: Final answer
    x = 147,215.40

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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.