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Finding the Fourth Proportional to 143,695.17, 198,299.21 and 83,300.78

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Solution

The fourth proportional to 143,695.17, 198,299.21 and 83,300.78 is: 114,955.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,695.17 : 198,299.21 = 83,300.78 : x
  2. Step 2: Convert to fraction form
    143,695.17/198,299.21 = 83,300.78/x
  3. Step 3: Cross multiply
    143,695.17x = 198,299.21 × 83,300.78
  4. Step 4: Simplify right side
    143,695.17x = 16,518,478,945.63
  5. Step 5: Solve for x
    x = 16,518,478,945.63/143,695.17
  6. Step 6: Final answer
    x = 114,955.00

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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.