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Finding the Fourth Proportional to 116,911.53, 161,331.84 and 65,922.84

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Solution

The fourth proportional to 116,911.53, 161,331.84 and 65,922.84 is: 90,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,911.53 : 161,331.84 = 65,922.84 : x
  2. Step 2: Convert to fraction form
    116,911.53/161,331.84 = 65,922.84/x
  3. Step 3: Cross multiply
    116,911.53x = 161,331.84 × 65,922.84
  4. Step 4: Simplify right side
    116,911.53x = 10,635,453,075.23
  5. Step 5: Solve for x
    x = 10,635,453,075.23/116,911.53
  6. Step 6: Final answer
    x = 90,970.10

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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.