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Finding the Fourth Proportional to 592,421.52, 817,540.86 and 320,488.80

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Solution

The fourth proportional to 592,421.52, 817,540.86 and 320,488.80 is: 442,274.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,421.52 : 817,540.86 = 320,488.80 : x
  2. Step 2: Convert to fraction form
    592,421.52/817,540.86 = 320,488.80/x
  3. Step 3: Cross multiply
    592,421.52x = 817,540.86 × 320,488.80
  4. Step 4: Simplify right side
    592,421.52x = 262,012,689,172.37
  5. Step 5: Solve for x
    x = 262,012,689,172.37/592,421.52
  6. Step 6: Final answer
    x = 442,274.09

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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.