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Finding the Fourth Proportional to 583,215.19, 874,822.78 and 139,983.19

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Solution

The fourth proportional to 583,215.19, 874,822.78 and 139,983.19 is: 209,974.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,215.19 : 874,822.78 = 139,983.19 : x
  2. Step 2: Convert to fraction form
    583,215.19/874,822.78 = 139,983.19/x
  3. Step 3: Cross multiply
    583,215.19x = 874,822.78 × 139,983.19
  4. Step 4: Simplify right side
    583,215.19x = 122,460,481,416.99
  5. Step 5: Solve for x
    x = 122,460,481,416.99/583,215.19
  6. Step 6: Final answer
    x = 209,974.78

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Half scale
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Double scale
Find fourth proportional to 583,216.19, 874,824.28 and 139,984.19
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.