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Finding the Fourth Proportional to 487,632.51, 673,068.13 and 283,722.82

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Solution

The fourth proportional to 487,632.51, 673,068.13 and 283,722.82 is: 391,616.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,632.51 : 673,068.13 = 283,722.82 : x
  2. Step 2: Convert to fraction form
    487,632.51/673,068.13 = 283,722.82/x
  3. Step 3: Cross multiply
    487,632.51x = 673,068.13 × 283,722.82
  4. Step 4: Simplify right side
    487,632.51x = 190,964,785,503.75
  5. Step 5: Solve for x
    x = 190,964,785,503.75/487,632.51
  6. Step 6: Final answer
    x = 391,616.19

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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.