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Finding the Fourth Proportional to 111,270.51, 153,553.38 and 65,970.84

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Solution

The fourth proportional to 111,270.51, 153,553.38 and 65,970.84 is: 91,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,270.51 : 153,553.38 = 65,970.84 : x
  2. Step 2: Convert to fraction form
    111,270.51/153,553.38 = 65,970.84/x
  3. Step 3: Cross multiply
    111,270.51x = 153,553.38 × 65,970.84
  4. Step 4: Simplify right side
    111,270.51x = 10,130,045,463.44
  5. Step 5: Solve for x
    x = 10,130,045,463.44/111,270.51
  6. Step 6: Final answer
    x = 91,039.80

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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.