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Finding the Fourth Proportional to 111,561.68, 153,957.84 and 61,260.68

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Solution

The fourth proportional to 111,561.68, 153,957.84 and 61,260.68 is: 84,541.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,561.68 : 153,957.84 = 61,260.68 : x
  2. Step 2: Convert to fraction form
    111,561.68/153,957.84 = 61,260.68/x
  3. Step 3: Cross multiply
    111,561.68x = 153,957.84 × 61,260.68
  4. Step 4: Simplify right side
    111,561.68x = 9,431,561,969.73
  5. Step 5: Solve for x
    x = 9,431,561,969.73/111,561.68
  6. Step 6: Final answer
    x = 84,541.23

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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.