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Finding the Fourth Proportional to 620,173.60, 930,041.70 and 220,827.40

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Solution

The fourth proportional to 620,173.60, 930,041.70 and 220,827.40 is: 331,163.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,173.60 : 930,041.70 = 220,827.40 : x
  2. Step 2: Convert to fraction form
    620,173.60/930,041.70 = 220,827.40/x
  3. Step 3: Cross multiply
    620,173.60x = 930,041.70 × 220,827.40
  4. Step 4: Simplify right side
    620,173.60x = 205,378,690,502.58
  5. Step 5: Solve for x
    x = 205,378,690,502.58/620,173.60
  6. Step 6: Final answer
    x = 331,163.23

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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.