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Finding the Fourth Proportional to 128,524.60, 177,123.54 and 92,653.48

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Solution

The fourth proportional to 128,524.60, 177,123.54 and 92,653.48 is: 127,688.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,524.60 : 177,123.54 = 92,653.48 : x
  2. Step 2: Convert to fraction form
    128,524.60/177,123.54 = 92,653.48/x
  3. Step 3: Cross multiply
    128,524.60x = 177,123.54 × 92,653.48
  4. Step 4: Simplify right side
    128,524.60x = 16,411,112,370.92
  5. Step 5: Solve for x
    x = 16,411,112,370.92/128,524.60
  6. Step 6: Final answer
    x = 127,688.49

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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.