Home / 642,687.48-964,166.09-193,441.23

Finding the Fourth Proportional to 642,687.48, 964,166.09 and 193,441.23

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Solution

The fourth proportional to 642,687.48, 964,166.09 and 193,441.23 is: 290,202.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,687.48 : 964,166.09 = 193,441.23 : x
  2. Step 2: Convert to fraction form
    642,687.48/964,166.09 = 193,441.23/x
  3. Step 3: Cross multiply
    642,687.48x = 964,166.09 × 193,441.23
  4. Step 4: Simplify right side
    642,687.48x = 186,509,473,406.69
  5. Step 5: Solve for x
    x = 186,509,473,406.69/642,687.48
  6. Step 6: Final answer
    x = 290,202.44

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Double scale
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1.5x scale

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.