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Finding the Fourth Proportional to 618,213.60, 926,445.60 and 542,980.80

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Solution

The fourth proportional to 618,213.60, 926,445.60 and 542,980.80 is: 813,702.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,213.60 : 926,445.60 = 542,980.80 : x
  2. Step 2: Convert to fraction form
    618,213.60/926,445.60 = 542,980.80/x
  3. Step 3: Cross multiply
    618,213.60x = 926,445.60 × 542,980.80
  4. Step 4: Simplify right side
    618,213.60x = 503,042,173,044.48
  5. Step 5: Solve for x
    x = 503,042,173,044.48/618,213.60
  6. Step 6: Final answer
    x = 813,702.86

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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.