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Finding the Fourth Proportional to 245,892.16, 339,363.51 and 138,483.19

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Solution

The fourth proportional to 245,892.16, 339,363.51 and 138,483.19 is: 191,125.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,892.16 : 339,363.51 = 138,483.19 : x
  2. Step 2: Convert to fraction form
    245,892.16/339,363.51 = 138,483.19/x
  3. Step 3: Cross multiply
    245,892.16x = 339,363.51 × 138,483.19
  4. Step 4: Simplify right side
    245,892.16x = 46,996,139,737.58
  5. Step 5: Solve for x
    x = 46,996,139,737.58/245,892.16
  6. Step 6: Final answer
    x = 191,125.01

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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.