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Finding the Fourth Proportional to 643,585.83, 965,534.83 and 194,279.86

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Solution

The fourth proportional to 643,585.83, 965,534.83 and 194,279.86 is: 291,466.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,585.83 : 965,534.83 = 194,279.86 : x
  2. Step 2: Convert to fraction form
    643,585.83/965,534.83 = 194,279.86/x
  3. Step 3: Cross multiply
    643,585.83x = 965,534.83 × 194,279.86
  4. Step 4: Simplify right side
    643,585.83x = 187,583,971,597.52
  5. Step 5: Solve for x
    x = 187,583,971,597.52/643,585.83
  6. Step 6: Final answer
    x = 291,466.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.