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Finding the Fourth Proportional to 202,298.30, 303,447.45 and 139,312.70

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Solution

The fourth proportional to 202,298.30, 303,447.45 and 139,312.70 is: 208,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,298.30 : 303,447.45 = 139,312.70 : x
  2. Step 2: Convert to fraction form
    202,298.30/303,447.45 = 139,312.70/x
  3. Step 3: Cross multiply
    202,298.30x = 303,447.45 × 139,312.70
  4. Step 4: Simplify right side
    202,298.30x = 42,274,083,567.62
  5. Step 5: Solve for x
    x = 42,274,083,567.62/202,298.30
  6. Step 6: Final answer
    x = 208,969.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.