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Finding the Fourth Proportional to 186,043.12, 256,728 and 104,366.88

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Solution

The fourth proportional to 186,043.12, 256,728 and 104,366.88 is: 144,019.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,043.12 : 256,728 = 104,366.88 : x
  2. Step 2: Convert to fraction form
    186,043.12/256,728 = 104,366.88/x
  3. Step 3: Cross multiply
    186,043.12x = 256,728 × 104,366.88
  4. Step 4: Simplify right side
    186,043.12x = 26,793,900,368.64
  5. Step 5: Solve for x
    x = 26,793,900,368.64/186,043.12
  6. Step 6: Final answer
    x = 144,019.84

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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.