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Finding the Fourth Proportional to 357,897.15, 536,451.96 and 147,420.27

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Solution

The fourth proportional to 357,897.15, 536,451.96 and 147,420.27 is: 220,968.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,897.15 : 536,451.96 = 147,420.27 : x
  2. Step 2: Convert to fraction form
    357,897.15/536,451.96 = 147,420.27/x
  3. Step 3: Cross multiply
    357,897.15x = 536,451.96 × 147,420.27
  4. Step 4: Simplify right side
    357,897.15x = 79,083,892,785.23
  5. Step 5: Solve for x
    x = 79,083,892,785.23/357,897.15
  6. Step 6: Final answer
    x = 220,968.21

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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.