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Finding the Fourth Proportional to 110,615.91, 152,669.55 and 65,290.95

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Solution

The fourth proportional to 110,615.91, 152,669.55 and 65,290.95 is: 90,113.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,615.91 : 152,669.55 = 65,290.95 : x
  2. Step 2: Convert to fraction form
    110,615.91/152,669.55 = 65,290.95/x
  3. Step 3: Cross multiply
    110,615.91x = 152,669.55 × 65,290.95
  4. Step 4: Simplify right side
    110,615.91x = 9,967,939,955.57
  5. Step 5: Solve for x
    x = 9,967,939,955.57/110,615.91
  6. Step 6: Final answer
    x = 90,113.08

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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.