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Finding the Fourth Proportional to 515,756.88, 773,598.80 and 136,669.22

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Solution

The fourth proportional to 515,756.88, 773,598.80 and 136,669.22 is: 204,994.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,756.88 : 773,598.80 = 136,669.22 : x
  2. Step 2: Convert to fraction form
    515,756.88/773,598.80 = 136,669.22/x
  3. Step 3: Cross multiply
    515,756.88x = 773,598.80 × 136,669.22
  4. Step 4: Simplify right side
    515,756.88x = 105,727,142,554.81
  5. Step 5: Solve for x
    x = 105,727,142,554.81/515,756.88
  6. Step 6: Final answer
    x = 204,994.15

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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.