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Finding the Fourth Proportional to 210,996.77, 316,262.95 and 104,222.63

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Solution

The fourth proportional to 210,996.77, 316,262.95 and 104,222.63 is: 156,219.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,996.77 : 316,262.95 = 104,222.63 : x
  2. Step 2: Convert to fraction form
    210,996.77/316,262.95 = 104,222.63/x
  3. Step 3: Cross multiply
    210,996.77x = 316,262.95 × 104,222.63
  4. Step 4: Simplify right side
    210,996.77x = 32,961,756,950.66
  5. Step 5: Solve for x
    x = 32,961,756,950.66/210,996.77
  6. Step 6: Final answer
    x = 156,219.25

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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.