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Finding the Fourth Proportional to 386,124.60, 579,186.90 and 119,966.70

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Solution

The fourth proportional to 386,124.60, 579,186.90 and 119,966.70 is: 179,950.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,124.60 : 579,186.90 = 119,966.70 : x
  2. Step 2: Convert to fraction form
    386,124.60/579,186.90 = 119,966.70/x
  3. Step 3: Cross multiply
    386,124.60x = 579,186.90 × 119,966.70
  4. Step 4: Simplify right side
    386,124.60x = 69,483,141,076.23
  5. Step 5: Solve for x
    x = 69,483,141,076.23/386,124.60
  6. Step 6: Final answer
    x = 179,950.05

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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.