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Finding the Fourth Proportional to 61,117, 84,341.58 and 34,621

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Solution

The fourth proportional to 61,117, 84,341.58 and 34,621 is: 47,777.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,117 : 84,341.58 = 34,621 : x
  2. Step 2: Convert to fraction form
    61,117/84,341.58 = 34,621/x
  3. Step 3: Cross multiply
    61,117x = 84,341.58 × 34,621
  4. Step 4: Simplify right side
    61,117x = 2,919,989,841.18
  5. Step 5: Solve for x
    x = 2,919,989,841.18/61,117
  6. Step 6: Final answer
    x = 47,777.05

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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.