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Finding the Fourth Proportional to 151,495.60, 209,079.48 and 91,085.92

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Solution

The fourth proportional to 151,495.60, 209,079.48 and 91,085.92 is: 125,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,495.60 : 209,079.48 = 91,085.92 : x
  2. Step 2: Convert to fraction form
    151,495.60/209,079.48 = 91,085.92/x
  3. Step 3: Cross multiply
    151,495.60x = 209,079.48 × 91,085.92
  4. Step 4: Simplify right side
    151,495.60x = 19,044,196,788.92
  5. Step 5: Solve for x
    x = 19,044,196,788.92/151,495.60
  6. Step 6: Final answer
    x = 125,707.92

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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.