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Finding the Fourth Proportional to 384,686.80, 577,030.20 and 171,454.30

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Solution

The fourth proportional to 384,686.80, 577,030.20 and 171,454.30 is: 257,181.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,686.80 : 577,030.20 = 171,454.30 : x
  2. Step 2: Convert to fraction form
    384,686.80/577,030.20 = 171,454.30/x
  3. Step 3: Cross multiply
    384,686.80x = 577,030.20 × 171,454.30
  4. Step 4: Simplify right side
    384,686.80x = 98,934,309,019.86
  5. Step 5: Solve for x
    x = 98,934,309,019.86/384,686.80
  6. Step 6: Final answer
    x = 257,181.45

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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.