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Finding the Fourth Proportional to 615,216.90, 922,652.55 and 194,621.70

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Solution

The fourth proportional to 615,216.90, 922,652.55 and 194,621.70 is: 291,877.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,216.90 : 922,652.55 = 194,621.70 : x
  2. Step 2: Convert to fraction form
    615,216.90/922,652.55 = 194,621.70/x
  3. Step 3: Cross multiply
    615,216.90x = 922,652.55 × 194,621.70
  4. Step 4: Simplify right side
    615,216.90x = 179,568,207,790.34
  5. Step 5: Solve for x
    x = 179,568,207,790.34/615,216.90
  6. Step 6: Final answer
    x = 291,877.89

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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.