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Finding the Fourth Proportional to 471,381.53, 707,075.88 and 134,421.90

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Solution

The fourth proportional to 471,381.53, 707,075.88 and 134,421.90 is: 201,633.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,381.53 : 707,075.88 = 134,421.90 : x
  2. Step 2: Convert to fraction form
    471,381.53/707,075.88 = 134,421.90/x
  3. Step 3: Cross multiply
    471,381.53x = 707,075.88 × 134,421.90
  4. Step 4: Simplify right side
    471,381.53x = 95,046,480,834.28
  5. Step 5: Solve for x
    x = 95,046,480,834.28/471,381.53
  6. Step 6: Final answer
    x = 201,633.87

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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.