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Finding the Fourth Proportional to 115,798.71, 173,518.72 and 80,329.01

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Solution

The fourth proportional to 115,798.71, 173,518.72 and 80,329.01 is: 120,369.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,798.71 : 173,518.72 = 80,329.01 : x
  2. Step 2: Convert to fraction form
    115,798.71/173,518.72 = 80,329.01/x
  3. Step 3: Cross multiply
    115,798.71x = 173,518.72 × 80,329.01
  4. Step 4: Simplify right side
    115,798.71x = 13,938,586,994.07
  5. Step 5: Solve for x
    x = 13,938,586,994.07/115,798.71
  6. Step 6: Final answer
    x = 120,369.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.