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Finding the Fourth Proportional to 127,281.69, 176,029.32 and 111,338.45

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Solution

The fourth proportional to 127,281.69, 176,029.32 and 111,338.45 is: 153,979.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,281.69 : 176,029.32 = 111,338.45 : x
  2. Step 2: Convert to fraction form
    127,281.69/176,029.32 = 111,338.45/x
  3. Step 3: Cross multiply
    127,281.69x = 176,029.32 × 111,338.45
  4. Step 4: Simplify right side
    127,281.69x = 19,598,831,086.66
  5. Step 5: Solve for x
    x = 19,598,831,086.66/127,281.69
  6. Step 6: Final answer
    x = 153,979.97

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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.