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Finding the Fourth Proportional to 125,210.30, 172,784.46 and 68,620.46

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Solution

The fourth proportional to 125,210.30, 172,784.46 and 68,620.46 is: 94,693.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,210.30 : 172,784.46 = 68,620.46 : x
  2. Step 2: Convert to fraction form
    125,210.30/172,784.46 = 68,620.46/x
  3. Step 3: Cross multiply
    125,210.30x = 172,784.46 × 68,620.46
  4. Step 4: Simplify right side
    125,210.30x = 11,856,549,126.05
  5. Step 5: Solve for x
    x = 11,856,549,126.05/125,210.30
  6. Step 6: Final answer
    x = 94,693.08

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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.