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Finding the Fourth Proportional to 8,482,692.60, 12,724,038.90 and 5,123,460.60

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Solution

The fourth proportional to 8,482,692.60, 12,724,038.90 and 5,123,460.60 is: 7,685,190.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482,692.60 : 12,724,038.90 = 5,123,460.60 : x
  2. Step 2: Convert to fraction form
    8,482,692.60/12,724,038.90 = 5,123,460.60/x
  3. Step 3: Cross multiply
    8,482,692.60x = 12,724,038.90 × 5,123,460.60
  4. Step 4: Simplify right side
    8,482,692.60x = 65,191,111,977,017.34
  5. Step 5: Solve for x
    x = 65,191,111,977,017.34/8,482,692.60
  6. Step 6: Final answer
    x = 7,685,190.90

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Similar ratio
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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.