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Finding the Fourth Proportional to 426,888.44, 589,128.72 and 245,627.90

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Solution

The fourth proportional to 426,888.44, 589,128.72 and 245,627.90 is: 338,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,888.44 : 589,128.72 = 245,627.90 : x
  2. Step 2: Convert to fraction form
    426,888.44/589,128.72 = 245,627.90/x
  3. Step 3: Cross multiply
    426,888.44x = 589,128.72 × 245,627.90
  4. Step 4: Simplify right side
    426,888.44x = 144,706,450,323.29
  5. Step 5: Solve for x
    x = 144,706,450,323.29/426,888.44
  6. Step 6: Final answer
    x = 338,979.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.