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Finding the Fourth Proportional to 186,872.40, 257,888.88 and 101,995.20

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Solution

The fourth proportional to 186,872.40, 257,888.88 and 101,995.20 is: 140,756.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,872.40 : 257,888.88 = 101,995.20 : x
  2. Step 2: Convert to fraction form
    186,872.40/257,888.88 = 101,995.20/x
  3. Step 3: Cross multiply
    186,872.40x = 257,888.88 × 101,995.20
  4. Step 4: Simplify right side
    186,872.40x = 26,303,427,893.38
  5. Step 5: Solve for x
    x = 26,303,427,893.38/186,872.40
  6. Step 6: Final answer
    x = 140,756.09

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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.