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Finding the Fourth Proportional to 583,836.75, 805,694.81 and 315,564.75

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Solution

The fourth proportional to 583,836.75, 805,694.81 and 315,564.75 is: 435,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,836.75 : 805,694.81 = 315,564.75 : x
  2. Step 2: Convert to fraction form
    583,836.75/805,694.81 = 315,564.75/x
  3. Step 3: Cross multiply
    583,836.75x = 805,694.81 × 315,564.75
  4. Step 4: Simplify right side
    583,836.75x = 254,248,879,716.12
  5. Step 5: Solve for x
    x = 254,248,879,716.12/583,836.75
  6. Step 6: Final answer
    x = 435,479.40

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Double scale
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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.