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Finding the Fourth Proportional to 61,855.70, 92,783.55 and 28,564.70

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Solution

The fourth proportional to 61,855.70, 92,783.55 and 28,564.70 is: 42,847.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,855.70 : 92,783.55 = 28,564.70 : x
  2. Step 2: Convert to fraction form
    61,855.70/92,783.55 = 28,564.70/x
  3. Step 3: Cross multiply
    61,855.70x = 92,783.55 × 28,564.70
  4. Step 4: Simplify right side
    61,855.70x = 2,650,334,270.69
  5. Step 5: Solve for x
    x = 2,650,334,270.69/61,855.70
  6. Step 6: Final answer
    x = 42,847.05

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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.