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Finding the Fourth Proportional to 405,311.76, 607,875.12 and 152,618.88

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Solution

The fourth proportional to 405,311.76, 607,875.12 and 152,618.88 is: 228,893.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,311.76 : 607,875.12 = 152,618.88 : x
  2. Step 2: Convert to fraction form
    405,311.76/607,875.12 = 152,618.88/x
  3. Step 3: Cross multiply
    405,311.76x = 607,875.12 × 152,618.88
  4. Step 4: Simplify right side
    405,311.76x = 92,773,219,994.27
  5. Step 5: Solve for x
    x = 92,773,219,994.27/405,311.76
  6. Step 6: Final answer
    x = 228,893.48

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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.