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Finding the Fourth Proportional to 98,809.01, 136,356.76 and 53,486.98

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Solution

The fourth proportional to 98,809.01, 136,356.76 and 53,486.98 is: 73,812.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,809.01 : 136,356.76 = 53,486.98 : x
  2. Step 2: Convert to fraction form
    98,809.01/136,356.76 = 53,486.98/x
  3. Step 3: Cross multiply
    98,809.01x = 136,356.76 × 53,486.98
  4. Step 4: Simplify right side
    98,809.01x = 7,293,311,294.98
  5. Step 5: Solve for x
    x = 7,293,311,294.98/98,809.01
  6. Step 6: Final answer
    x = 73,812.21

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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.