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Finding the Fourth Proportional to 127,582.60, 190,920.30 and 111,123.40

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Solution

The fourth proportional to 127,582.60, 190,920.30 and 111,123.40 is: 166,290.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,582.60 : 190,920.30 = 111,123.40 : x
  2. Step 2: Convert to fraction form
    127,582.60/190,920.30 = 111,123.40/x
  3. Step 3: Cross multiply
    127,582.60x = 190,920.30 × 111,123.40
  4. Step 4: Simplify right side
    127,582.60x = 21,215,712,865.02
  5. Step 5: Solve for x
    x = 21,215,712,865.02/127,582.60
  6. Step 6: Final answer
    x = 166,290.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.