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Finding the Fourth Proportional to 266,072.60, 399,108.90 and 160,837.40

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Solution

The fourth proportional to 266,072.60, 399,108.90 and 160,837.40 is: 241,256.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,072.60 : 399,108.90 = 160,837.40 : x
  2. Step 2: Convert to fraction form
    266,072.60/399,108.90 = 160,837.40/x
  3. Step 3: Cross multiply
    266,072.60x = 399,108.90 × 160,837.40
  4. Step 4: Simplify right side
    266,072.60x = 64,191,637,792.86
  5. Step 5: Solve for x
    x = 64,191,637,792.86/266,072.60
  6. Step 6: Final answer
    x = 241,256.10

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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.