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Finding the Fourth Proportional to 93,180.81, 128,591.61 and 52,890.78

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Solution

The fourth proportional to 93,180.81, 128,591.61 and 52,890.78 is: 72,990.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,180.81 : 128,591.61 = 52,890.78 : x
  2. Step 2: Convert to fraction form
    93,180.81/128,591.61 = 52,890.78/x
  3. Step 3: Cross multiply
    93,180.81x = 128,591.61 × 52,890.78
  4. Step 4: Simplify right side
    93,180.81x = 6,801,310,554.36
  5. Step 5: Solve for x
    x = 6,801,310,554.36/93,180.81
  6. Step 6: Final answer
    x = 72,990.46

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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.