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Finding the Fourth Proportional to 61,876.61, 85,389.66 and 35,018.63

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Solution

The fourth proportional to 61,876.61, 85,389.66 and 35,018.63 is: 48,325.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,876.61 : 85,389.66 = 35,018.63 : x
  2. Step 2: Convert to fraction form
    61,876.61/85,389.66 = 35,018.63/x
  3. Step 3: Cross multiply
    61,876.61x = 85,389.66 × 35,018.63
  4. Step 4: Simplify right side
    61,876.61x = 2,990,228,482.42
  5. Step 5: Solve for x
    x = 2,990,228,482.42/61,876.61
  6. Step 6: Final answer
    x = 48,325.67

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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.