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Finding the Fourth Proportional to 103,806.69, 143,253.22 and 56,060.03

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Solution

The fourth proportional to 103,806.69, 143,253.22 and 56,060.03 is: 77,362.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,806.69 : 143,253.22 = 56,060.03 : x
  2. Step 2: Convert to fraction form
    103,806.69/143,253.22 = 56,060.03/x
  3. Step 3: Cross multiply
    103,806.69x = 143,253.22 × 56,060.03
  4. Step 4: Simplify right side
    103,806.69x = 8,030,779,810.80
  5. Step 5: Solve for x
    x = 8,030,779,810.80/103,806.69
  6. Step 6: Final answer
    x = 77,362.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.