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Finding the Fourth Proportional to 191,401.60, 287,102.40 and 58,280.80

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Solution

The fourth proportional to 191,401.60, 287,102.40 and 58,280.80 is: 87,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,401.60 : 287,102.40 = 58,280.80 : x
  2. Step 2: Convert to fraction form
    191,401.60/287,102.40 = 58,280.80/x
  3. Step 3: Cross multiply
    191,401.60x = 287,102.40 × 58,280.80
  4. Step 4: Simplify right side
    191,401.60x = 16,732,557,553.92
  5. Step 5: Solve for x
    x = 16,732,557,553.92/191,401.60
  6. Step 6: Final answer
    x = 87,421.20

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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.