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Finding the Fourth Proportional to 186,389.68, 257,228.52 and 140,366.92

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Solution

The fourth proportional to 186,389.68, 257,228.52 and 140,366.92 is: 193,714.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,389.68 : 257,228.52 = 140,366.92 : x
  2. Step 2: Convert to fraction form
    186,389.68/257,228.52 = 140,366.92/x
  3. Step 3: Cross multiply
    186,389.68x = 257,228.52 × 140,366.92
  4. Step 4: Simplify right side
    186,389.68x = 36,106,375,088.56
  5. Step 5: Solve for x
    x = 36,106,375,088.56/186,389.68
  6. Step 6: Final answer
    x = 193,714.45

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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.