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Finding the Fourth Proportional to 186,318.70, 257,119.79 and 101,435.76

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Solution

The fourth proportional to 186,318.70, 257,119.79 and 101,435.76 is: 139,981.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,318.70 : 257,119.79 = 101,435.76 : x
  2. Step 2: Convert to fraction form
    186,318.70/257,119.79 = 101,435.76/x
  3. Step 3: Cross multiply
    186,318.70x = 257,119.79 × 101,435.76
  4. Step 4: Simplify right side
    186,318.70x = 26,081,141,373.09
  5. Step 5: Solve for x
    x = 26,081,141,373.09/186,318.70
  6. Step 6: Final answer
    x = 139,981.34

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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.