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Finding the Fourth Proportional to 318,437.60, 439,432.80 and 175,196.16

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Solution

The fourth proportional to 318,437.60, 439,432.80 and 175,196.16 is: 241,764.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,437.60 : 439,432.80 = 175,196.16 : x
  2. Step 2: Convert to fraction form
    318,437.60/439,432.80 = 175,196.16/x
  3. Step 3: Cross multiply
    318,437.60x = 439,432.80 × 175,196.16
  4. Step 4: Simplify right side
    318,437.60x = 76,986,939,138.05
  5. Step 5: Solve for x
    x = 76,986,939,138.05/318,437.60
  6. Step 6: Final answer
    x = 241,764.60

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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.