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Finding the Fourth Proportional to 127,688.76, 176,183.73 and 73,970.55

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Solution

The fourth proportional to 127,688.76, 176,183.73 and 73,970.55 is: 102,063.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,688.76 : 176,183.73 = 73,970.55 : x
  2. Step 2: Convert to fraction form
    127,688.76/176,183.73 = 73,970.55/x
  3. Step 3: Cross multiply
    127,688.76x = 176,183.73 × 73,970.55
  4. Step 4: Simplify right side
    127,688.76x = 13,032,407,409.15
  5. Step 5: Solve for x
    x = 13,032,407,409.15/127,688.76
  6. Step 6: Final answer
    x = 102,063.86

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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.