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Finding the Fourth Proportional to 223,667.37, 308,669.51 and 128,192.54

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Solution

The fourth proportional to 223,667.37, 308,669.51 and 128,192.54 is: 176,910.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,667.37 : 308,669.51 = 128,192.54 : x
  2. Step 2: Convert to fraction form
    223,667.37/308,669.51 = 128,192.54/x
  3. Step 3: Cross multiply
    223,667.37x = 308,669.51 × 128,192.54
  4. Step 4: Simplify right side
    223,667.37x = 39,569,128,507.46
  5. Step 5: Solve for x
    x = 39,569,128,507.46/223,667.37
  6. Step 6: Final answer
    x = 176,910.60

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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.