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Finding the Fourth Proportional to 620,404.30, 930,606.45 and 557,418.70

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Solution

The fourth proportional to 620,404.30, 930,606.45 and 557,418.70 is: 836,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,404.30 : 930,606.45 = 557,418.70 : x
  2. Step 2: Convert to fraction form
    620,404.30/930,606.45 = 557,418.70/x
  3. Step 3: Cross multiply
    620,404.30x = 930,606.45 × 557,418.70
  4. Step 4: Simplify right side
    620,404.30x = 518,737,437,570.62
  5. Step 5: Solve for x
    x = 518,737,437,570.62/620,404.30
  6. Step 6: Final answer
    x = 836,128.05

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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.