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Finding the Fourth Proportional to 78,692.76, 118,075.98 and 39,252.92

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Solution

The fourth proportional to 78,692.76, 118,075.98 and 39,252.92 is: 58,897.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,692.76 : 118,075.98 = 39,252.92 : x
  2. Step 2: Convert to fraction form
    78,692.76/118,075.98 = 39,252.92/x
  3. Step 3: Cross multiply
    78,692.76x = 118,075.98 × 39,252.92
  4. Step 4: Simplify right side
    78,692.76x = 4,634,826,996.86
  5. Step 5: Solve for x
    x = 4,634,826,996.86/78,692.76
  6. Step 6: Final answer
    x = 58,897.76

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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.