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Finding the Fourth Proportional to 128,196.98, 176,908.11 and 70,835.39

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Solution

The fourth proportional to 128,196.98, 176,908.11 and 70,835.39 is: 97,750.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,196.98 : 176,908.11 = 70,835.39 : x
  2. Step 2: Convert to fraction form
    128,196.98/176,908.11 = 70,835.39/x
  3. Step 3: Cross multiply
    128,196.98x = 176,908.11 × 70,835.39
  4. Step 4: Simplify right side
    128,196.98x = 12,531,354,180.92
  5. Step 5: Solve for x
    x = 12,531,354,180.92/128,196.98
  6. Step 6: Final answer
    x = 97,750.78

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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.