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Finding the Fourth Proportional to 98,995.98, 136,622.34 and 55,984.53

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Solution

The fourth proportional to 98,995.98, 136,622.34 and 55,984.53 is: 77,263.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,995.98 : 136,622.34 = 55,984.53 : x
  2. Step 2: Convert to fraction form
    98,995.98/136,622.34 = 55,984.53/x
  3. Step 3: Cross multiply
    98,995.98x = 136,622.34 × 55,984.53
  4. Step 4: Simplify right side
    98,995.98x = 7,648,737,492.40
  5. Step 5: Solve for x
    x = 7,648,737,492.40/98,995.98
  6. Step 6: Final answer
    x = 77,263.11

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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.