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Finding the Fourth Proportional to 355,577.80, 533,366.70 and 316,870.60

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Solution

The fourth proportional to 355,577.80, 533,366.70 and 316,870.60 is: 475,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,577.80 : 533,366.70 = 316,870.60 : x
  2. Step 2: Convert to fraction form
    355,577.80/533,366.70 = 316,870.60/x
  3. Step 3: Cross multiply
    355,577.80x = 533,366.70 × 316,870.60
  4. Step 4: Simplify right side
    355,577.80x = 169,008,226,249.02
  5. Step 5: Solve for x
    x = 169,008,226,249.02/355,577.80
  6. Step 6: Final answer
    x = 475,305.90

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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.