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Finding the Fourth Proportional to 583,246.80, 874,870.20 and 209,221.20

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Solution

The fourth proportional to 583,246.80, 874,870.20 and 209,221.20 is: 313,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,246.80 : 874,870.20 = 209,221.20 : x
  2. Step 2: Convert to fraction form
    583,246.80/874,870.20 = 209,221.20/x
  3. Step 3: Cross multiply
    583,246.80x = 874,870.20 × 209,221.20
  4. Step 4: Simplify right side
    583,246.80x = 183,041,393,088.24
  5. Step 5: Solve for x
    x = 183,041,393,088.24/583,246.80
  6. Step 6: Final answer
    x = 313,831.80

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Double scale
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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.