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Finding the Fourth Proportional to 127,854.63, 176,460.18 and 76,918.84

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Solution

The fourth proportional to 127,854.63, 176,460.18 and 76,918.84 is: 106,160.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,854.63 : 176,460.18 = 76,918.84 : x
  2. Step 2: Convert to fraction form
    127,854.63/176,460.18 = 76,918.84/x
  3. Step 3: Cross multiply
    127,854.63x = 176,460.18 × 76,918.84
  4. Step 4: Simplify right side
    127,854.63x = 13,573,112,351.79
  5. Step 5: Solve for x
    x = 13,573,112,351.79/127,854.63
  6. Step 6: Final answer
    x = 106,160.51

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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.