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Finding the Fourth Proportional to 127,854.58, 176,441.64 and 71,259.88

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Solution

The fourth proportional to 127,854.58, 176,441.64 and 71,259.88 is: 98,339.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,854.58 : 176,441.64 = 71,259.88 : x
  2. Step 2: Convert to fraction form
    127,854.58/176,441.64 = 71,259.88/x
  3. Step 3: Cross multiply
    127,854.58x = 176,441.64 × 71,259.88
  4. Step 4: Simplify right side
    127,854.58x = 12,573,210,093.40
  5. Step 5: Solve for x
    x = 12,573,210,093.40/127,854.58
  6. Step 6: Final answer
    x = 98,339.93

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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.