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Finding the Fourth Proportional to 223,570.53, 308,527.11 and 128,077.61

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Solution

The fourth proportional to 223,570.53, 308,527.11 and 128,077.61 is: 176,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,570.53 : 308,527.11 = 128,077.61 : x
  2. Step 2: Convert to fraction form
    223,570.53/308,527.11 = 128,077.61/x
  3. Step 3: Cross multiply
    223,570.53x = 308,527.11 × 128,077.61
  4. Step 4: Simplify right side
    223,570.53x = 39,515,413,326.37
  5. Step 5: Solve for x
    x = 39,515,413,326.37/223,570.53
  6. Step 6: Final answer
    x = 176,746.97

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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.