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Finding the Fourth Proportional to 658,901.60, 988,514.40 and 185,580.80

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Solution

The fourth proportional to 658,901.60, 988,514.40 and 185,580.80 is: 278,416.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,901.60 : 988,514.40 = 185,580.80 : x
  2. Step 2: Convert to fraction form
    658,901.60/988,514.40 = 185,580.80/x
  3. Step 3: Cross multiply
    658,901.60x = 988,514.40 × 185,580.80
  4. Step 4: Simplify right side
    658,901.60x = 183,449,293,163.52
  5. Step 5: Solve for x
    x = 183,449,293,163.52/658,901.60
  6. Step 6: Final answer
    x = 278,416.83

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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.