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Finding the Fourth Proportional to 52,700.79, 72,726.14 and 28,827.26

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Solution

The fourth proportional to 52,700.79, 72,726.14 and 28,827.26 is: 39,781.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,700.79 : 72,726.14 = 28,827.26 : x
  2. Step 2: Convert to fraction form
    52,700.79/72,726.14 = 28,827.26/x
  3. Step 3: Cross multiply
    52,700.79x = 72,726.14 × 28,827.26
  4. Step 4: Simplify right side
    52,700.79x = 2,096,495,055.01
  5. Step 5: Solve for x
    x = 2,096,495,055.01/52,700.79
  6. Step 6: Final answer
    x = 39,781.09

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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.