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Finding the Fourth Proportional to 109,701.20, 153,996.40 and 109,701.20

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Solution

The fourth proportional to 109,701.20, 153,996.40 and 109,701.20 is: 153,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,701.20 : 153,996.40 = 109,701.20 : x
  2. Step 2: Convert to fraction form
    109,701.20/153,996.40 = 109,701.20/x
  3. Step 3: Cross multiply
    109,701.20x = 153,996.40 × 109,701.20
  4. Step 4: Simplify right side
    109,701.20x = 16,893,589,875.68
  5. Step 5: Solve for x
    x = 16,893,589,875.68/109,701.20
  6. Step 6: Final answer
    x = 153,996.40

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1.5x scale

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.