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Finding the Fourth Proportional to 186,554.79, 257,446.47 and 105,986.74

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Solution

The fourth proportional to 186,554.79, 257,446.47 and 105,986.74 is: 146,262.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,554.79 : 257,446.47 = 105,986.74 : x
  2. Step 2: Convert to fraction form
    186,554.79/257,446.47 = 105,986.74/x
  3. Step 3: Cross multiply
    186,554.79x = 257,446.47 × 105,986.74
  4. Step 4: Simplify right side
    186,554.79x = 27,285,911,436.19
  5. Step 5: Solve for x
    x = 27,285,911,436.19/186,554.79
  6. Step 6: Final answer
    x = 146,262.19

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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.