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Finding the Fourth Proportional to 235,529.77, 325,021.72 and 128,099.74

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Solution

The fourth proportional to 235,529.77, 325,021.72 and 128,099.74 is: 176,772.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,529.77 : 325,021.72 = 128,099.74 : x
  2. Step 2: Convert to fraction form
    235,529.77/325,021.72 = 128,099.74/x
  3. Step 3: Cross multiply
    235,529.77x = 325,021.72 × 128,099.74
  4. Step 4: Simplify right side
    235,529.77x = 41,635,197,826.35
  5. Step 5: Solve for x
    x = 41,635,197,826.35/235,529.77
  6. Step 6: Final answer
    x = 176,772.55

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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.