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Finding the Fourth Proportional to 615,091.90, 922,465.05 and 194,496.70

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Solution

The fourth proportional to 615,091.90, 922,465.05 and 194,496.70 is: 291,690.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,091.90 : 922,465.05 = 194,496.70 : x
  2. Step 2: Convert to fraction form
    615,091.90/922,465.05 = 194,496.70/x
  3. Step 3: Cross multiply
    615,091.90x = 922,465.05 × 194,496.70
  4. Step 4: Simplify right side
    615,091.90x = 179,416,408,090.34
  5. Step 5: Solve for x
    x = 179,416,408,090.34/615,091.90
  6. Step 6: Final answer
    x = 291,690.41

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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.