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Finding the Fourth Proportional to 553,401.74, 830,189.99 and 193,673.05

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Solution

The fourth proportional to 553,401.74, 830,189.99 and 193,673.05 is: 290,540.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,401.74 : 830,189.99 = 193,673.05 : x
  2. Step 2: Convert to fraction form
    553,401.74/830,189.99 = 193,673.05/x
  3. Step 3: Cross multiply
    553,401.74x = 830,189.99 × 193,673.05
  4. Step 4: Simplify right side
    553,401.74x = 160,785,425,851.48
  5. Step 5: Solve for x
    x = 160,785,425,851.48/553,401.74
  6. Step 6: Final answer
    x = 290,540.15

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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.