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Finding the Fourth Proportional to 223,576.70, 308,535.09 and 128,083.10

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Solution

The fourth proportional to 223,576.70, 308,535.09 and 128,083.10 is: 176,754.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,576.70 : 308,535.09 = 128,083.10 : x
  2. Step 2: Convert to fraction form
    223,576.70/308,535.09 = 128,083.10/x
  3. Step 3: Cross multiply
    223,576.70x = 308,535.09 × 128,083.10
  4. Step 4: Simplify right side
    223,576.70x = 39,518,130,785.98
  5. Step 5: Solve for x
    x = 39,518,130,785.98/223,576.70
  6. Step 6: Final answer
    x = 176,754.24

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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.