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Finding the Fourth Proportional to 223,036.80, 334,555.20 and 128,558.40

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Solution

The fourth proportional to 223,036.80, 334,555.20 and 128,558.40 is: 192,837.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,036.80 : 334,555.20 = 128,558.40 : x
  2. Step 2: Convert to fraction form
    223,036.80/334,555.20 = 128,558.40/x
  3. Step 3: Cross multiply
    223,036.80x = 334,555.20 × 128,558.40
  4. Step 4: Simplify right side
    223,036.80x = 43,009,881,223.68
  5. Step 5: Solve for x
    x = 43,009,881,223.68/223,036.80
  6. Step 6: Final answer
    x = 192,837.60

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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.