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Finding the Fourth Proportional to 103,699.74, 143,113.52 and 62,875.74

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Solution

The fourth proportional to 103,699.74, 143,113.52 and 62,875.74 is: 86,773.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.74 : 143,113.52 = 62,875.74 : x
  2. Step 2: Convert to fraction form
    103,699.74/143,113.52 = 62,875.74/x
  3. Step 3: Cross multiply
    103,699.74x = 143,113.52 × 62,875.74
  4. Step 4: Simplify right side
    103,699.74x = 8,998,368,474.00
  5. Step 5: Solve for x
    x = 8,998,368,474.00/103,699.74
  6. Step 6: Final answer
    x = 86,773.30

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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.