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Finding the Fourth Proportional to 356,543.60, 534,815.40 and 156,651.80

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Solution

The fourth proportional to 356,543.60, 534,815.40 and 156,651.80 is: 234,977.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,543.60 : 534,815.40 = 156,651.80 : x
  2. Step 2: Convert to fraction form
    356,543.60/534,815.40 = 156,651.80/x
  3. Step 3: Cross multiply
    356,543.60x = 534,815.40 × 156,651.80
  4. Step 4: Simplify right side
    356,543.60x = 83,779,795,077.72
  5. Step 5: Solve for x
    x = 83,779,795,077.72/356,543.60
  6. Step 6: Final answer
    x = 234,977.70

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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.