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Finding the Fourth Proportional to 359,015.10, 538,522.65 and 247,040.70

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Solution

The fourth proportional to 359,015.10, 538,522.65 and 247,040.70 is: 370,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,015.10 : 538,522.65 = 247,040.70 : x
  2. Step 2: Convert to fraction form
    359,015.10/538,522.65 = 247,040.70/x
  3. Step 3: Cross multiply
    359,015.10x = 538,522.65 × 247,040.70
  4. Step 4: Simplify right side
    359,015.10x = 133,037,012,421.86
  5. Step 5: Solve for x
    x = 133,037,012,421.86/359,015.10
  6. Step 6: Final answer
    x = 370,561.05

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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.