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Finding the Fourth Proportional to 208,852.65, 288,216.99 and 113,359.32

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Solution

The fourth proportional to 208,852.65, 288,216.99 and 113,359.32 is: 156,436.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,852.65 : 288,216.99 = 113,359.32 : x
  2. Step 2: Convert to fraction form
    208,852.65/288,216.99 = 113,359.32/x
  3. Step 3: Cross multiply
    208,852.65x = 288,216.99 × 113,359.32
  4. Step 4: Simplify right side
    208,852.65x = 32,672,081,998.85
  5. Step 5: Solve for x
    x = 32,672,081,998.85/208,852.65
  6. Step 6: Final answer
    x = 156,436.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.