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Finding the Fourth Proportional to 477,362.80, 715,990.73 and 122,385.16

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Solution

The fourth proportional to 477,362.80, 715,990.73 and 122,385.16 is: 183,564.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,362.80 : 715,990.73 = 122,385.16 : x
  2. Step 2: Convert to fraction form
    477,362.80/715,990.73 = 122,385.16/x
  3. Step 3: Cross multiply
    477,362.80x = 715,990.73 × 122,385.16
  4. Step 4: Simplify right side
    477,362.80x = 87,626,636,469.61
  5. Step 5: Solve for x
    x = 87,626,636,469.61/477,362.80
  6. Step 6: Final answer
    x = 183,564.03

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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.