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Finding the Fourth Proportional to 261,000.80, 391,501.20 and 184,893.20

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Solution

The fourth proportional to 261,000.80, 391,501.20 and 184,893.20 is: 277,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,000.80 : 391,501.20 = 184,893.20 : x
  2. Step 2: Convert to fraction form
    261,000.80/391,501.20 = 184,893.20/x
  3. Step 3: Cross multiply
    261,000.80x = 391,501.20 × 184,893.20
  4. Step 4: Simplify right side
    261,000.80x = 72,385,909,671.84
  5. Step 5: Solve for x
    x = 72,385,909,671.84/261,000.80
  6. Step 6: Final answer
    x = 277,339.80

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1.5x scale

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.