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Finding the Fourth Proportional to 125,835.30, 188,688.15 and 46,908.90

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Solution

The fourth proportional to 125,835.30, 188,688.15 and 46,908.90 is: 70,339.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,835.30 : 188,688.15 = 46,908.90 : x
  2. Step 2: Convert to fraction form
    125,835.30/188,688.15 = 46,908.90/x
  3. Step 3: Cross multiply
    125,835.30x = 188,688.15 × 46,908.90
  4. Step 4: Simplify right side
    125,835.30x = 8,851,153,559.54
  5. Step 5: Solve for x
    x = 8,851,153,559.54/125,835.30
  6. Step 6: Final answer
    x = 70,339.19

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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.