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Finding the Fourth Proportional to 186,862.78, 257,867.04 and 101,980.45

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Solution

The fourth proportional to 186,862.78, 257,867.04 and 101,980.45 is: 140,731.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,862.78 : 257,867.04 = 101,980.45 : x
  2. Step 2: Convert to fraction form
    186,862.78/257,867.04 = 101,980.45/x
  3. Step 3: Cross multiply
    186,862.78x = 257,867.04 × 101,980.45
  4. Step 4: Simplify right side
    186,862.78x = 26,297,396,779.37
  5. Step 5: Solve for x
    x = 26,297,396,779.37/186,862.78
  6. Step 6: Final answer
    x = 140,731.06

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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.