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Finding the Fourth Proportional to 234,181.50, 351,272.25 and 86,437.50

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Solution

The fourth proportional to 234,181.50, 351,272.25 and 86,437.50 is: 129,656.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,181.50 : 351,272.25 = 86,437.50 : x
  2. Step 2: Convert to fraction form
    234,181.50/351,272.25 = 86,437.50/x
  3. Step 3: Cross multiply
    234,181.50x = 351,272.25 × 86,437.50
  4. Step 4: Simplify right side
    234,181.50x = 30,363,095,109.38
  5. Step 5: Solve for x
    x = 30,363,095,109.38/234,181.50
  6. Step 6: Final answer
    x = 129,656.25

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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.