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Finding the Fourth Proportional to 101,713.92, 140,368.54 and 56,396.12

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Solution

The fourth proportional to 101,713.92, 140,368.54 and 56,396.12 is: 77,828.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,713.92 : 140,368.54 = 56,396.12 : x
  2. Step 2: Convert to fraction form
    101,713.92/140,368.54 = 56,396.12/x
  3. Step 3: Cross multiply
    101,713.92x = 140,368.54 × 56,396.12
  4. Step 4: Simplify right side
    101,713.92x = 7,916,241,026.06
  5. Step 5: Solve for x
    x = 7,916,241,026.06/101,713.92
  6. Step 6: Final answer
    x = 77,828.49

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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.