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Finding the Fourth Proportional to 97,716.60, 146,574.90 and 31,156.20

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Solution

The fourth proportional to 97,716.60, 146,574.90 and 31,156.20 is: 46,734.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,716.60 : 146,574.90 = 31,156.20 : x
  2. Step 2: Convert to fraction form
    97,716.60/146,574.90 = 31,156.20/x
  3. Step 3: Cross multiply
    97,716.60x = 146,574.90 × 31,156.20
  4. Step 4: Simplify right side
    97,716.60x = 4,566,716,899.38
  5. Step 5: Solve for x
    x = 4,566,716,899.38/97,716.60
  6. Step 6: Final answer
    x = 46,734.30

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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.