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Finding the Fourth Proportional to 186,397.25, 257,235.48 and 105,832.28

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Solution

The fourth proportional to 186,397.25, 257,235.48 and 105,832.28 is: 146,052.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,397.25 : 257,235.48 = 105,832.28 : x
  2. Step 2: Convert to fraction form
    186,397.25/257,235.48 = 105,832.28/x
  3. Step 3: Cross multiply
    186,397.25x = 257,235.48 × 105,832.28
  4. Step 4: Simplify right side
    186,397.25x = 27,223,816,059.12
  5. Step 5: Solve for x
    x = 27,223,816,059.12/186,397.25
  6. Step 6: Final answer
    x = 146,052.67

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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.