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Finding the Fourth Proportional to 368,246.80, 551,203.80 and 288,931.60

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Solution

The fourth proportional to 368,246.80, 551,203.80 and 288,931.60 is: 432,482.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,246.80 : 551,203.80 = 288,931.60 : x
  2. Step 2: Convert to fraction form
    368,246.80/551,203.80 = 288,931.60/x
  3. Step 3: Cross multiply
    368,246.80x = 551,203.80 × 288,931.60
  4. Step 4: Simplify right side
    368,246.80x = 159,260,195,860.08
  5. Step 5: Solve for x
    x = 159,260,195,860.08/368,246.80
  6. Step 6: Final answer
    x = 432,482.23

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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.