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Finding the Fourth Proportional to 186,903.40, 257,917.62 and 102,015.40

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Solution

The fourth proportional to 186,903.40, 257,917.62 and 102,015.40 is: 140,776.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,903.40 : 257,917.62 = 102,015.40 : x
  2. Step 2: Convert to fraction form
    186,903.40/257,917.62 = 102,015.40/x
  3. Step 3: Cross multiply
    186,903.40x = 257,917.62 × 102,015.40
  4. Step 4: Simplify right side
    186,903.40x = 26,311,569,171.35
  5. Step 5: Solve for x
    x = 26,311,569,171.35/186,903.40
  6. Step 6: Final answer
    x = 140,776.30

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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.