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Finding the Fourth Proportional to 583,305.80, 874,958.70 and 209,280.20

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Solution

The fourth proportional to 583,305.80, 874,958.70 and 209,280.20 is: 313,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,305.80 : 874,958.70 = 209,280.20 : x
  2. Step 2: Convert to fraction form
    583,305.80/874,958.70 = 209,280.20/x
  3. Step 3: Cross multiply
    583,305.80x = 874,958.70 × 209,280.20
  4. Step 4: Simplify right side
    583,305.80x = 183,111,531,727.74
  5. Step 5: Solve for x
    x = 183,111,531,727.74/583,305.80
  6. Step 6: Final answer
    x = 313,920.30

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Double scale
Find fourth proportional to 583,306.80, 874,960.20 and 209,281.20
Similar ratio
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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.