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Finding the Fourth Proportional to 620,893.02, 856,194.40 and 518,880.41

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Solution

The fourth proportional to 620,893.02, 856,194.40 and 518,880.41 is: 715,521.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,893.02 : 856,194.40 = 518,880.41 : x
  2. Step 2: Convert to fraction form
    620,893.02/856,194.40 = 518,880.41/x
  3. Step 3: Cross multiply
    620,893.02x = 856,194.40 × 518,880.41
  4. Step 4: Simplify right side
    620,893.02x = 444,262,497,030.73
  5. Step 5: Solve for x
    x = 444,262,497,030.73/620,893.02
  6. Step 6: Final answer
    x = 715,521.81

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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.