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Finding the Fourth Proportional to 186,445.84, 257,301.48 and 101,570.80

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Solution

The fourth proportional to 186,445.84, 257,301.48 and 101,570.80 is: 140,171.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,445.84 : 257,301.48 = 101,570.80 : x
  2. Step 2: Convert to fraction form
    186,445.84/257,301.48 = 101,570.80/x
  3. Step 3: Cross multiply
    186,445.84x = 257,301.48 × 101,570.80
  4. Step 4: Simplify right side
    186,445.84x = 26,134,317,164.78
  5. Step 5: Solve for x
    x = 26,134,317,164.78/186,445.84
  6. Step 6: Final answer
    x = 140,171.09

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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.