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Finding the Fourth Proportional to 621,253.09, 931,891.29 and 194,779.46

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Solution

The fourth proportional to 621,253.09, 931,891.29 and 194,779.46 is: 292,172.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,253.09 : 931,891.29 = 194,779.46 : x
  2. Step 2: Convert to fraction form
    621,253.09/931,891.29 = 194,779.46/x
  3. Step 3: Cross multiply
    621,253.09x = 931,891.29 × 194,779.46
  4. Step 4: Simplify right side
    621,253.09x = 181,513,282,244.90
  5. Step 5: Solve for x
    x = 181,513,282,244.90/621,253.09
  6. Step 6: Final answer
    x = 292,172.84

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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.