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Finding the Fourth Proportional to 154,797.74, 213,630.22 and 86,818.74

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Solution

The fourth proportional to 154,797.74, 213,630.22 and 86,818.74 is: 119,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,797.74 : 213,630.22 = 86,818.74 : x
  2. Step 2: Convert to fraction form
    154,797.74/213,630.22 = 86,818.74/x
  3. Step 3: Cross multiply
    154,797.74x = 213,630.22 × 86,818.74
  4. Step 4: Simplify right side
    154,797.74x = 18,547,106,526.32
  5. Step 5: Solve for x
    x = 18,547,106,526.32/154,797.74
  6. Step 6: Final answer
    x = 119,815.10

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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.