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Finding the Fourth Proportional to 828,602.30, 1,239,793.05 and 548,666.30

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Solution

The fourth proportional to 828,602.30, 1,239,793.05 and 548,666.30 is: 820,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,602.30 : 1,239,793.05 = 548,666.30 : x
  2. Step 2: Convert to fraction form
    828,602.30/1,239,793.05 = 548,666.30/x
  3. Step 3: Cross multiply
    828,602.30x = 1,239,793.05 × 548,666.30
  4. Step 4: Simplify right side
    828,602.30x = 680,232,665,509.22
  5. Step 5: Solve for x
    x = 680,232,665,509.22/828,602.30
  6. Step 6: Final answer
    x = 820,939.87

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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.