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Finding the Fourth Proportional to 125,705.72, 188,904.18 and 117,486.20

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Solution

The fourth proportional to 125,705.72, 188,904.18 and 117,486.20 is: 176,552.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,705.72 : 188,904.18 = 117,486.20 : x
  2. Step 2: Convert to fraction form
    125,705.72/188,904.18 = 117,486.20/x
  3. Step 3: Cross multiply
    125,705.72x = 188,904.18 × 117,486.20
  4. Step 4: Simplify right side
    125,705.72x = 22,193,634,272.32
  5. Step 5: Solve for x
    x = 22,193,634,272.32/125,705.72
  6. Step 6: Final answer
    x = 176,552.30

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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.