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Finding the Fourth Proportional to 186,553.50, 257,444.70 and 105,985.44

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Solution

The fourth proportional to 186,553.50, 257,444.70 and 105,985.44 is: 146,260.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,553.50 : 257,444.70 = 105,985.44 : x
  2. Step 2: Convert to fraction form
    186,553.50/257,444.70 = 105,985.44/x
  3. Step 3: Cross multiply
    186,553.50x = 257,444.70 × 105,985.44
  4. Step 4: Simplify right side
    186,553.50x = 27,285,389,275.24
  5. Step 5: Solve for x
    x = 27,285,389,275.24/186,553.50
  6. Step 6: Final answer
    x = 146,260.40

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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.