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Finding the Fourth Proportional to 42,692.70, 64,039.05 and 23,009.70

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Solution

The fourth proportional to 42,692.70, 64,039.05 and 23,009.70 is: 34,514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,692.70 : 64,039.05 = 23,009.70 : x
  2. Step 2: Convert to fraction form
    42,692.70/64,039.05 = 23,009.70/x
  3. Step 3: Cross multiply
    42,692.70x = 64,039.05 × 23,009.70
  4. Step 4: Simplify right side
    42,692.70x = 1,473,519,328.79
  5. Step 5: Solve for x
    x = 1,473,519,328.79/42,692.70
  6. Step 6: Final answer
    x = 34,514.55

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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.