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Finding the Fourth Proportional to 127,765.84, 176,314.65 and 74,055.86

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Solution

The fourth proportional to 127,765.84, 176,314.65 and 74,055.86 is: 102,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,765.84 : 176,314.65 = 74,055.86 : x
  2. Step 2: Convert to fraction form
    127,765.84/176,314.65 = 74,055.86/x
  3. Step 3: Cross multiply
    127,765.84x = 176,314.65 × 74,055.86
  4. Step 4: Simplify right side
    127,765.84x = 13,057,133,036.35
  5. Step 5: Solve for x
    x = 13,057,133,036.35/127,765.84
  6. Step 6: Final answer
    x = 102,195.81

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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.