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Finding the Fourth Proportional to 716,050.42, 988,156.85 and 393,762.89

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Solution

The fourth proportional to 716,050.42, 988,156.85 and 393,762.89 is: 543,396.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,050.42 : 988,156.85 = 393,762.89 : x
  2. Step 2: Convert to fraction form
    716,050.42/988,156.85 = 393,762.89/x
  3. Step 3: Cross multiply
    716,050.42x = 988,156.85 × 393,762.89
  4. Step 4: Simplify right side
    716,050.42x = 389,099,497,530.87
  5. Step 5: Solve for x
    x = 389,099,497,530.87/716,050.42
  6. Step 6: Final answer
    x = 543,396.79

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Double scale
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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.