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Finding the Fourth Proportional to 203,341.30, 280,611.01 and 112,703.11

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Solution

The fourth proportional to 203,341.30, 280,611.01 and 112,703.11 is: 155,530.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,341.30 : 280,611.01 = 112,703.11 : x
  2. Step 2: Convert to fraction form
    203,341.30/280,611.01 = 112,703.11/x
  3. Step 3: Cross multiply
    203,341.30x = 280,611.01 × 112,703.11
  4. Step 4: Simplify right side
    203,341.30x = 31,625,732,543.96
  5. Step 5: Solve for x
    x = 31,625,732,543.96/203,341.30
  6. Step 6: Final answer
    x = 155,530.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.