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Finding the Fourth Proportional to 186,321.52, 257,116.80 and 101,436.88

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Solution

The fourth proportional to 186,321.52, 257,116.80 and 101,436.88 is: 139,979.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,321.52 : 257,116.80 = 101,436.88 : x
  2. Step 2: Convert to fraction form
    186,321.52/257,116.80 = 101,436.88/x
  3. Step 3: Cross multiply
    186,321.52x = 257,116.80 × 101,436.88
  4. Step 4: Simplify right side
    186,321.52x = 26,081,125,987.58
  5. Step 5: Solve for x
    x = 26,081,125,987.58/186,321.52
  6. Step 6: Final answer
    x = 139,979.14

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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.