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Finding the Fourth Proportional to 110,002.70, 165,068.85 and 72,670.70

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Solution

The fourth proportional to 110,002.70, 165,068.85 and 72,670.70 is: 109,048.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,002.70 : 165,068.85 = 72,670.70 : x
  2. Step 2: Convert to fraction form
    110,002.70/165,068.85 = 72,670.70/x
  3. Step 3: Cross multiply
    110,002.70x = 165,068.85 × 72,670.70
  4. Step 4: Simplify right side
    110,002.70x = 11,995,668,877.70
  5. Step 5: Solve for x
    x = 11,995,668,877.70/110,002.70
  6. Step 6: Final answer
    x = 109,048.86

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1.5x scale

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.