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Finding the Fourth Proportional to 154,292.91, 212,914.17 and 86,298.10

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Solution

The fourth proportional to 154,292.91, 212,914.17 and 86,298.10 is: 119,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,292.91 : 212,914.17 = 86,298.10 : x
  2. Step 2: Convert to fraction form
    154,292.91/212,914.17 = 86,298.10/x
  3. Step 3: Cross multiply
    154,292.91x = 212,914.17 × 86,298.10
  4. Step 4: Simplify right side
    154,292.91x = 18,374,087,801.79
  5. Step 5: Solve for x
    x = 18,374,087,801.79/154,292.91
  6. Step 6: Final answer
    x = 119,085.76

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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.