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Finding the Fourth Proportional to 202,373.10, 303,316.65 and 139,193.10

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Solution

The fourth proportional to 202,373.10, 303,316.65 and 139,193.10 is: 208,622.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,373.10 : 303,316.65 = 139,193.10 : x
  2. Step 2: Convert to fraction form
    202,373.10/303,316.65 = 139,193.10/x
  3. Step 3: Cross multiply
    202,373.10x = 303,316.65 × 139,193.10
  4. Step 4: Simplify right side
    202,373.10x = 42,219,584,795.12
  5. Step 5: Solve for x
    x = 42,219,584,795.12/202,373.10
  6. Step 6: Final answer
    x = 208,622.51

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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.