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Finding the Fourth Proportional to 98,292.61, 135,643.48 and 53,580.61

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Solution

The fourth proportional to 98,292.61, 135,643.48 and 53,580.61 is: 73,941.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,292.61 : 135,643.48 = 53,580.61 : x
  2. Step 2: Convert to fraction form
    98,292.61/135,643.48 = 53,580.61/x
  3. Step 3: Cross multiply
    98,292.61x = 135,643.48 × 53,580.61
  4. Step 4: Simplify right side
    98,292.61x = 7,267,860,400.92
  5. Step 5: Solve for x
    x = 7,267,860,400.92/98,292.61
  6. Step 6: Final answer
    x = 73,941.07

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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.