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Finding the Fourth Proportional to 99,809.55, 137,692.98 and 67,532.67

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Solution

The fourth proportional to 99,809.55, 137,692.98 and 67,532.67 is: 93,165.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,809.55 : 137,692.98 = 67,532.67 : x
  2. Step 2: Convert to fraction form
    99,809.55/137,692.98 = 67,532.67/x
  3. Step 3: Cross multiply
    99,809.55x = 137,692.98 × 67,532.67
  4. Step 4: Simplify right side
    99,809.55x = 9,298,774,579.66
  5. Step 5: Solve for x
    x = 9,298,774,579.66/99,809.55
  6. Step 6: Final answer
    x = 93,165.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.