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Finding the Fourth Proportional to 384,341.80, 576,512.70 and 171,109.30

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Solution

The fourth proportional to 384,341.80, 576,512.70 and 171,109.30 is: 256,663.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,341.80 : 576,512.70 = 171,109.30 : x
  2. Step 2: Convert to fraction form
    384,341.80/576,512.70 = 171,109.30/x
  3. Step 3: Cross multiply
    384,341.80x = 576,512.70 × 171,109.30
  4. Step 4: Simplify right side
    384,341.80x = 98,646,684,538.11
  5. Step 5: Solve for x
    x = 98,646,684,538.11/384,341.80
  6. Step 6: Final answer
    x = 256,663.95

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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.