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Finding the Fourth Proportional to 528,099.74, 728,777.81 and 286,382.24

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Solution

The fourth proportional to 528,099.74, 728,777.81 and 286,382.24 is: 395,207.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,099.74 : 728,777.81 = 286,382.24 : x
  2. Step 2: Convert to fraction form
    528,099.74/728,777.81 = 286,382.24/x
  3. Step 3: Cross multiply
    528,099.74x = 728,777.81 × 286,382.24
  4. Step 4: Simplify right side
    528,099.74x = 208,709,016,614.29
  5. Step 5: Solve for x
    x = 208,709,016,614.29/528,099.74
  6. Step 6: Final answer
    x = 395,207.58

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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.