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Finding the Fourth Proportional to 209,641.55, 289,310.54 and 114,153.48

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Solution

The fourth proportional to 209,641.55, 289,310.54 and 114,153.48 is: 157,534.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,641.55 : 289,310.54 = 114,153.48 : x
  2. Step 2: Convert to fraction form
    209,641.55/289,310.54 = 114,153.48/x
  3. Step 3: Cross multiply
    209,641.55x = 289,310.54 × 114,153.48
  4. Step 4: Simplify right side
    209,641.55x = 33,025,804,370.91
  5. Step 5: Solve for x
    x = 33,025,804,370.91/209,641.55
  6. Step 6: Final answer
    x = 157,534.64

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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.