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Finding the Fourth Proportional to 218,840.60, 328,260.90 and 191,192.60

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Solution

The fourth proportional to 218,840.60, 328,260.90 and 191,192.60 is: 286,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,840.60 : 328,260.90 = 191,192.60 : x
  2. Step 2: Convert to fraction form
    218,840.60/328,260.90 = 191,192.60/x
  3. Step 3: Cross multiply
    218,840.60x = 328,260.90 × 191,192.60
  4. Step 4: Simplify right side
    218,840.60x = 62,761,054,949.34
  5. Step 5: Solve for x
    x = 62,761,054,949.34/218,840.60
  6. Step 6: Final answer
    x = 286,788.90

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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.