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Finding the Fourth Proportional to 110,220.65, 165,213.91 and 70,113.46

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Solution

The fourth proportional to 110,220.65, 165,213.91 and 70,113.46 is: 105,095.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,220.65 : 165,213.91 = 70,113.46 : x
  2. Step 2: Convert to fraction form
    110,220.65/165,213.91 = 70,113.46/x
  3. Step 3: Cross multiply
    110,220.65x = 165,213.91 × 70,113.46
  4. Step 4: Simplify right side
    110,220.65x = 11,583,718,389.95
  5. Step 5: Solve for x
    x = 11,583,718,389.95/110,220.65
  6. Step 6: Final answer
    x = 105,095.72

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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.