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Finding the Fourth Proportional to 110,940.87, 153,210.24 and 70,672.80

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Solution

The fourth proportional to 110,940.87, 153,210.24 and 70,672.80 is: 97,599.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,940.87 : 153,210.24 = 70,672.80 : x
  2. Step 2: Convert to fraction form
    110,940.87/153,210.24 = 70,672.80/x
  3. Step 3: Cross multiply
    110,940.87x = 153,210.24 × 70,672.80
  4. Step 4: Simplify right side
    110,940.87x = 10,827,796,649.47
  5. Step 5: Solve for x
    x = 10,827,796,649.47/110,940.87
  6. Step 6: Final answer
    x = 97,599.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.