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Finding the Fourth Proportional to 170,894.80, 256,339.80 and 77,400.40

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Solution

The fourth proportional to 170,894.80, 256,339.80 and 77,400.40 is: 116,099.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,894.80 : 256,339.80 = 77,400.40 : x
  2. Step 2: Convert to fraction form
    170,894.80/256,339.80 = 77,400.40/x
  3. Step 3: Cross multiply
    170,894.80x = 256,339.80 × 77,400.40
  4. Step 4: Simplify right side
    170,894.80x = 19,840,803,055.92
  5. Step 5: Solve for x
    x = 19,840,803,055.92/170,894.80
  6. Step 6: Final answer
    x = 116,099.51

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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.