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Finding the Fourth Proportional to 620,866.57, 931,415.36 and 216,041.93

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Solution

The fourth proportional to 620,866.57, 931,415.36 and 216,041.93 is: 324,103.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,866.57 : 931,415.36 = 216,041.93 : x
  2. Step 2: Convert to fraction form
    620,866.57/931,415.36 = 216,041.93/x
  3. Step 3: Cross multiply
    620,866.57x = 931,415.36 × 216,041.93
  4. Step 4: Simplify right side
    620,866.57x = 201,224,775,000.78
  5. Step 5: Solve for x
    x = 201,224,775,000.78/620,866.57
  6. Step 6: Final answer
    x = 324,103.09

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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.