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Finding the Fourth Proportional to 104,195.94, 143,790.13 and 56,450.46

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Solution

The fourth proportional to 104,195.94, 143,790.13 and 56,450.46 is: 77,901.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,195.94 : 143,790.13 = 56,450.46 : x
  2. Step 2: Convert to fraction form
    104,195.94/143,790.13 = 56,450.46/x
  3. Step 3: Cross multiply
    104,195.94x = 143,790.13 × 56,450.46
  4. Step 4: Simplify right side
    104,195.94x = 8,117,018,981.96
  5. Step 5: Solve for x
    x = 8,117,018,981.96/104,195.94
  6. Step 6: Final answer
    x = 77,901.49

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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.