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Finding the Fourth Proportional to 368,461.80, 552,692.70 and 256,487.40

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Solution

The fourth proportional to 368,461.80, 552,692.70 and 256,487.40 is: 384,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,461.80 : 552,692.70 = 256,487.40 : x
  2. Step 2: Convert to fraction form
    368,461.80/552,692.70 = 256,487.40/x
  3. Step 3: Cross multiply
    368,461.80x = 552,692.70 × 256,487.40
  4. Step 4: Simplify right side
    368,461.80x = 141,758,713,621.98
  5. Step 5: Solve for x
    x = 141,758,713,621.98/368,461.80
  6. Step 6: Final answer
    x = 384,731.10

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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.