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Finding the Fourth Proportional to 223,580.66, 308,541.08 and 128,087.73

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Solution

The fourth proportional to 223,580.66, 308,541.08 and 128,087.73 is: 176,760.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,580.66 : 308,541.08 = 128,087.73 : x
  2. Step 2: Convert to fraction form
    223,580.66/308,541.08 = 128,087.73/x
  3. Step 3: Cross multiply
    223,580.66x = 308,541.08 × 128,087.73
  4. Step 4: Simplify right side
    223,580.66x = 39,520,326,869.17
  5. Step 5: Solve for x
    x = 39,520,326,869.17/223,580.66
  6. Step 6: Final answer
    x = 176,760.94

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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.