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Finding the Fourth Proportional to 186,238.71, 257,015.25 and 105,669.63

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Solution

The fourth proportional to 186,238.71, 257,015.25 and 105,669.63 is: 145,827.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,238.71 : 257,015.25 = 105,669.63 : x
  2. Step 2: Convert to fraction form
    186,238.71/257,015.25 = 105,669.63/x
  3. Step 3: Cross multiply
    186,238.71x = 257,015.25 × 105,669.63
  4. Step 4: Simplify right side
    186,238.71x = 27,158,706,371.86
  5. Step 5: Solve for x
    x = 27,158,706,371.86/186,238.71
  6. Step 6: Final answer
    x = 145,827.40

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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.