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Finding the Fourth Proportional to 286,344.99, 429,522.89 and 86,664.60

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Solution

The fourth proportional to 286,344.99, 429,522.89 and 86,664.60 is: 129,998.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,344.99 : 429,522.89 = 86,664.60 : x
  2. Step 2: Convert to fraction form
    286,344.99/429,522.89 = 86,664.60/x
  3. Step 3: Cross multiply
    286,344.99x = 429,522.89 × 86,664.60
  4. Step 4: Simplify right side
    286,344.99x = 37,224,429,019.37
  5. Step 5: Solve for x
    x = 37,224,429,019.37/286,344.99
  6. Step 6: Final answer
    x = 129,998.53

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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.