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Finding the Fourth Proportional to 186,505.54, 257,300.60 and 129,949.72

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Solution

The fourth proportional to 186,505.54, 257,300.60 and 129,949.72 is: 179,276.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,505.54 : 257,300.60 = 129,949.72 : x
  2. Step 2: Convert to fraction form
    186,505.54/257,300.60 = 129,949.72/x
  3. Step 3: Cross multiply
    186,505.54x = 257,300.60 × 129,949.72
  4. Step 4: Simplify right side
    186,505.54x = 33,436,140,925.83
  5. Step 5: Solve for x
    x = 33,436,140,925.83/186,505.54
  6. Step 6: Final answer
    x = 179,276.93

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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.