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Finding the Fourth Proportional to 517,672.20, 776,945.70 and 202,355.40

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Solution

The fourth proportional to 517,672.20, 776,945.70 and 202,355.40 is: 303,704.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,672.20 : 776,945.70 = 202,355.40 : x
  2. Step 2: Convert to fraction form
    517,672.20/776,945.70 = 202,355.40/x
  3. Step 3: Cross multiply
    517,672.20x = 776,945.70 × 202,355.40
  4. Step 4: Simplify right side
    517,672.20x = 157,219,157,901.78
  5. Step 5: Solve for x
    x = 157,219,157,901.78/517,672.20
  6. Step 6: Final answer
    x = 303,704.08

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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.