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Finding the Fourth Proportional to 618,937.65, 854,133.21 and 347,005.62

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Solution

The fourth proportional to 618,937.65, 854,133.21 and 347,005.62 is: 478,867.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,937.65 : 854,133.21 = 347,005.62 : x
  2. Step 2: Convert to fraction form
    618,937.65/854,133.21 = 347,005.62/x
  3. Step 3: Cross multiply
    618,937.65x = 854,133.21 × 347,005.62
  4. Step 4: Simplify right side
    618,937.65x = 296,389,024,098.64
  5. Step 5: Solve for x
    x = 296,389,024,098.64/618,937.65
  6. Step 6: Final answer
    x = 478,867.34

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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.