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Finding the Fourth Proportional to 68,113.12, 94,007.37 and 39,813.34

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Solution

The fourth proportional to 68,113.12, 94,007.37 and 39,813.34 is: 54,948.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,113.12 : 94,007.37 = 39,813.34 : x
  2. Step 2: Convert to fraction form
    68,113.12/94,007.37 = 39,813.34/x
  3. Step 3: Cross multiply
    68,113.12x = 94,007.37 × 39,813.34
  4. Step 4: Simplify right side
    68,113.12x = 3,742,747,384.32
  5. Step 5: Solve for x
    x = 3,742,747,384.32/68,113.12
  6. Step 6: Final answer
    x = 54,948.99

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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.