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Finding the Fourth Proportional to 111,707.77, 154,156.43 and 60,720.49

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Solution

The fourth proportional to 111,707.77, 154,156.43 and 60,720.49 is: 83,794.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,707.77 : 154,156.43 = 60,720.49 : x
  2. Step 2: Convert to fraction form
    111,707.77/154,156.43 = 60,720.49/x
  3. Step 3: Cross multiply
    111,707.77x = 154,156.43 × 60,720.49
  4. Step 4: Simplify right side
    111,707.77x = 9,360,453,966.25
  5. Step 5: Solve for x
    x = 9,360,453,966.25/111,707.77
  6. Step 6: Final answer
    x = 83,794.12

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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.