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Finding the Fourth Proportional to 61,816.81, 92,736.74 and 28,085.19

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Solution

The fourth proportional to 61,816.81, 92,736.74 and 28,085.19 is: 42,133.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,816.81 : 92,736.74 = 28,085.19 : x
  2. Step 2: Convert to fraction form
    61,816.81/92,736.74 = 28,085.19/x
  3. Step 3: Cross multiply
    61,816.81x = 92,736.74 × 28,085.19
  4. Step 4: Simplify right side
    61,816.81x = 2,604,528,358.77
  5. Step 5: Solve for x
    x = 2,604,528,358.77/61,816.81
  6. Step 6: Final answer
    x = 42,133.01

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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.