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Finding the Fourth Proportional to 516,705.51, 774,907.61 and 201,087.39

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Solution

The fourth proportional to 516,705.51, 774,907.61 and 201,087.39 is: 301,572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,705.51 : 774,907.61 = 201,087.39 : x
  2. Step 2: Convert to fraction form
    516,705.51/774,907.61 = 201,087.39/x
  3. Step 3: Cross multiply
    516,705.51x = 774,907.61 × 201,087.39
  4. Step 4: Simplify right side
    516,705.51x = 155,824,147,780.60
  5. Step 5: Solve for x
    x = 155,824,147,780.60/516,705.51
  6. Step 6: Final answer
    x = 301,572.45

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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.