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Finding the Fourth Proportional to 528,369.97, 729,151.95 and 286,652.53

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Solution

The fourth proportional to 528,369.97, 729,151.95 and 286,652.53 is: 395,581.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,369.97 : 729,151.95 = 286,652.53 : x
  2. Step 2: Convert to fraction form
    528,369.97/729,151.95 = 286,652.53/x
  3. Step 3: Cross multiply
    528,369.97x = 729,151.95 × 286,652.53
  4. Step 4: Simplify right side
    528,369.97x = 209,013,251,221.93
  5. Step 5: Solve for x
    x = 209,013,251,221.93/528,369.97
  6. Step 6: Final answer
    x = 395,581.25

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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.