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Finding the Fourth Proportional to 223,562.79, 308,560.46 and 128,133.45

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Solution

The fourth proportional to 223,562.79, 308,560.46 and 128,133.45 is: 176,849.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,562.79 : 308,560.46 = 128,133.45 : x
  2. Step 2: Convert to fraction form
    223,562.79/308,560.46 = 128,133.45/x
  3. Step 3: Cross multiply
    223,562.79x = 308,560.46 × 128,133.45
  4. Step 4: Simplify right side
    223,562.79x = 39,536,915,632.72
  5. Step 5: Solve for x
    x = 39,536,915,632.72/223,562.79
  6. Step 6: Final answer
    x = 176,849.27

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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.