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Finding the Fourth Proportional to 109,903.90, 154,176.50 and 109,903.90

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Solution

The fourth proportional to 109,903.90, 154,176.50 and 109,903.90 is: 154,176.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,903.90 : 154,176.50 = 109,903.90 : x
  2. Step 2: Convert to fraction form
    109,903.90/154,176.50 = 109,903.90/x
  3. Step 3: Cross multiply
    109,903.90x = 154,176.50 × 109,903.90
  4. Step 4: Simplify right side
    109,903.90x = 16,944,598,638.35
  5. Step 5: Solve for x
    x = 16,944,598,638.35/109,903.90
  6. Step 6: Final answer
    x = 154,176.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.