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Finding the Fourth Proportional to 154,100.99, 212,658.73 and 86,117.94

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Solution

The fourth proportional to 154,100.99, 212,658.73 and 86,117.94 is: 118,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,100.99 : 212,658.73 = 86,117.94 : x
  2. Step 2: Convert to fraction form
    154,100.99/212,658.73 = 86,117.94/x
  3. Step 3: Cross multiply
    154,100.99x = 212,658.73 × 86,117.94
  4. Step 4: Simplify right side
    154,100.99x = 18,313,731,750.62
  5. Step 5: Solve for x
    x = 18,313,731,750.62/154,100.99
  6. Step 6: Final answer
    x = 118,842.40

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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.