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Finding the Fourth Proportional to 212,697.87, 319,097.72 and 60,897.06

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Solution

The fourth proportional to 212,697.87, 319,097.72 and 60,897.06 is: 91,360.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,697.87 : 319,097.72 = 60,897.06 : x
  2. Step 2: Convert to fraction form
    212,697.87/319,097.72 = 60,897.06/x
  3. Step 3: Cross multiply
    212,697.87x = 319,097.72 × 60,897.06
  4. Step 4: Simplify right side
    212,697.87x = 19,432,113,000.70
  5. Step 5: Solve for x
    x = 19,432,113,000.70/212,697.87
  6. Step 6: Final answer
    x = 91,360.17

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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.