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Finding the Fourth Proportional to 618,541.52, 853,586.71 and 346,611.56

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Solution

The fourth proportional to 618,541.52, 853,586.71 and 346,611.56 is: 478,323.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,541.52 : 853,586.71 = 346,611.56 : x
  2. Step 2: Convert to fraction form
    618,541.52/853,586.71 = 346,611.56/x
  3. Step 3: Cross multiply
    618,541.52x = 853,586.71 × 346,611.56
  4. Step 4: Simplify right side
    618,541.52x = 295,863,016,013.91
  5. Step 5: Solve for x
    x = 295,863,016,013.91/618,541.52
  6. Step 6: Final answer
    x = 478,323.62

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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.