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Finding the Fourth Proportional to 528,652.56, 729,538.69 and 286,935.13

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Solution

The fourth proportional to 528,652.56, 729,538.69 and 286,935.13 is: 395,969.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,652.56 : 729,538.69 = 286,935.13 : x
  2. Step 2: Convert to fraction form
    528,652.56/729,538.69 = 286,935.13/x
  3. Step 3: Cross multiply
    528,652.56x = 729,538.69 × 286,935.13
  4. Step 4: Simplify right side
    528,652.56x = 209,330,280,832.59
  5. Step 5: Solve for x
    x = 209,330,280,832.59/528,652.56
  6. Step 6: Final answer
    x = 395,969.48

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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.