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Finding the Fourth Proportional to 170,765.40, 256,148.10 and 77,453.40

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Solution

The fourth proportional to 170,765.40, 256,148.10 and 77,453.40 is: 116,180.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,765.40 : 256,148.10 = 77,453.40 : x
  2. Step 2: Convert to fraction form
    170,765.40/256,148.10 = 77,453.40/x
  3. Step 3: Cross multiply
    170,765.40x = 256,148.10 × 77,453.40
  4. Step 4: Simplify right side
    170,765.40x = 19,839,541,248.54
  5. Step 5: Solve for x
    x = 19,839,541,248.54/170,765.40
  6. Step 6: Final answer
    x = 116,180.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.