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Finding the Fourth Proportional to 111,113.68, 153,313.14 and 65,805.88

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Solution

The fourth proportional to 111,113.68, 153,313.14 and 65,805.88 is: 90,798.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,113.68 : 153,313.14 = 65,805.88 : x
  2. Step 2: Convert to fraction form
    111,113.68/153,313.14 = 65,805.88/x
  3. Step 3: Cross multiply
    111,113.68x = 153,313.14 × 65,805.88
  4. Step 4: Simplify right side
    111,113.68x = 10,088,906,093.26
  5. Step 5: Solve for x
    x = 10,088,906,093.26/111,113.68
  6. Step 6: Final answer
    x = 90,798.06

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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.