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Finding the Fourth Proportional to 111,570.60, 167,355.90 and 64,943.40

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Solution

The fourth proportional to 111,570.60, 167,355.90 and 64,943.40 is: 97,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,570.60 : 167,355.90 = 64,943.40 : x
  2. Step 2: Convert to fraction form
    111,570.60/167,355.90 = 64,943.40/x
  3. Step 3: Cross multiply
    111,570.60x = 167,355.90 × 64,943.40
  4. Step 4: Simplify right side
    111,570.60x = 10,868,661,156.06
  5. Step 5: Solve for x
    x = 10,868,661,156.06/111,570.60
  6. Step 6: Final answer
    x = 97,415.10

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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.