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Finding the Fourth Proportional to 61,980.49, 85,531.29 and 35,125.50

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Solution

The fourth proportional to 61,980.49, 85,531.29 and 35,125.50 is: 48,472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,980.49 : 85,531.29 = 35,125.50 : x
  2. Step 2: Convert to fraction form
    61,980.49/85,531.29 = 35,125.50/x
  3. Step 3: Cross multiply
    61,980.49x = 85,531.29 × 35,125.50
  4. Step 4: Simplify right side
    61,980.49x = 3,004,329,232.38
  5. Step 5: Solve for x
    x = 3,004,329,232.38/61,980.49
  6. Step 6: Final answer
    x = 48,472.18

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1.5x scale

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.