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Finding the Fourth Proportional to 617,553.90, 926,330.85 and 417,969.90

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Solution

The fourth proportional to 617,553.90, 926,330.85 and 417,969.90 is: 626,954.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,553.90 : 926,330.85 = 417,969.90 : x
  2. Step 2: Convert to fraction form
    617,553.90/926,330.85 = 417,969.90/x
  3. Step 3: Cross multiply
    617,553.90x = 926,330.85 × 417,969.90
  4. Step 4: Simplify right side
    617,553.90x = 387,178,412,741.42
  5. Step 5: Solve for x
    x = 387,178,412,741.42/617,553.90
  6. Step 6: Final answer
    x = 626,954.85

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Similar ratio
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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.