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Finding the Fourth Proportional to 620,714.70, 930,985.65 and 200,033.10

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Solution

The fourth proportional to 620,714.70, 930,985.65 and 200,033.10 is: 300,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,714.70 : 930,985.65 = 200,033.10 : x
  2. Step 2: Convert to fraction form
    620,714.70/930,985.65 = 200,033.10/x
  3. Step 3: Cross multiply
    620,714.70x = 930,985.65 × 200,033.10
  4. Step 4: Simplify right side
    620,714.70x = 186,227,945,625.02
  5. Step 5: Solve for x
    x = 186,227,945,625.02/620,714.70
  6. Step 6: Final answer
    x = 300,021.81

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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.