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Finding the Fourth Proportional to 104,959.50, 157,465.90 and 31,087.50

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Solution

The fourth proportional to 104,959.50, 157,465.90 and 31,087.50 is: 46,639.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,959.50 : 157,465.90 = 31,087.50 : x
  2. Step 2: Convert to fraction form
    104,959.50/157,465.90 = 31,087.50/x
  3. Step 3: Cross multiply
    104,959.50x = 157,465.90 × 31,087.50
  4. Step 4: Simplify right side
    104,959.50x = 4,895,221,166.25
  5. Step 5: Solve for x
    x = 4,895,221,166.25/104,959.50
  6. Step 6: Final answer
    x = 46,639.14

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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.