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Finding the Fourth Proportional to 321,605.60, 443,830.55 and 178,357.10

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Solution

The fourth proportional to 321,605.60, 443,830.55 and 178,357.10 is: 246,141.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,605.60 : 443,830.55 = 178,357.10 : x
  2. Step 2: Convert to fraction form
    321,605.60/443,830.55 = 178,357.10/x
  3. Step 3: Cross multiply
    321,605.60x = 443,830.55 × 178,357.10
  4. Step 4: Simplify right side
    321,605.60x = 79,160,326,678.47
  5. Step 5: Solve for x
    x = 79,160,326,678.47/321,605.60
  6. Step 6: Final answer
    x = 246,141.01

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1.5x scale

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.