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Finding the Fourth Proportional to 291,613.77, 399,802.43 and 286,299.36

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Solution

The fourth proportional to 291,613.77, 399,802.43 and 286,299.36 is: 392,516.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,613.77 : 399,802.43 = 286,299.36 : x
  2. Step 2: Convert to fraction form
    291,613.77/399,802.43 = 286,299.36/x
  3. Step 3: Cross multiply
    291,613.77x = 399,802.43 × 286,299.36
  4. Step 4: Simplify right side
    291,613.77x = 114,463,180,551.19
  5. Step 5: Solve for x
    x = 114,463,180,551.19/291,613.77
  6. Step 6: Final answer
    x = 392,516.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.