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Finding the Fourth Proportional to 212,810.70, 319,262.76 and 63,062.70

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Solution

The fourth proportional to 212,810.70, 319,262.76 and 63,062.70 is: 94,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,810.70 : 319,262.76 = 63,062.70 : x
  2. Step 2: Convert to fraction form
    212,810.70/319,262.76 = 63,062.70/x
  3. Step 3: Cross multiply
    212,810.70x = 319,262.76 × 63,062.70
  4. Step 4: Simplify right side
    212,810.70x = 20,133,571,655.05
  5. Step 5: Solve for x
    x = 20,133,571,655.05/212,810.70
  6. Step 6: Final answer
    x = 94,607.89

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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.