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Finding the Fourth Proportional to 620,957.78, 930,773.52 and 354,143.78

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Solution

The fourth proportional to 620,957.78, 930,773.52 and 354,143.78 is: 530,837.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,957.78 : 930,773.52 = 354,143.78 : x
  2. Step 2: Convert to fraction form
    620,957.78/930,773.52 = 354,143.78/x
  3. Step 3: Cross multiply
    620,957.78x = 930,773.52 × 354,143.78
  4. Step 4: Simplify right side
    620,957.78x = 329,627,652,696.71
  5. Step 5: Solve for x
    x = 329,627,652,696.71/620,957.78
  6. Step 6: Final answer
    x = 530,837.46

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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.