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Finding the Fourth Proportional to 186,352.63, 257,150.42 and 105,783.55

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Solution

The fourth proportional to 186,352.63, 257,150.42 and 105,783.55 is: 145,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,352.63 : 257,150.42 = 105,783.55 : x
  2. Step 2: Convert to fraction form
    186,352.63/257,150.42 = 105,783.55/x
  3. Step 3: Cross multiply
    186,352.63x = 257,150.42 × 105,783.55
  4. Step 4: Simplify right side
    186,352.63x = 27,202,284,311.59
  5. Step 5: Solve for x
    x = 27,202,284,311.59/186,352.63
  6. Step 6: Final answer
    x = 145,972.10

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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.