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Finding the Fourth Proportional to 553,965.40, 830,832.90 and 238,432.60

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Solution

The fourth proportional to 553,965.40, 830,832.90 and 238,432.60 is: 357,599.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,965.40 : 830,832.90 = 238,432.60 : x
  2. Step 2: Convert to fraction form
    553,965.40/830,832.90 = 238,432.60/x
  3. Step 3: Cross multiply
    553,965.40x = 830,832.90 × 238,432.60
  4. Step 4: Simplify right side
    553,965.40x = 198,097,648,512.54
  5. Step 5: Solve for x
    x = 198,097,648,512.54/553,965.40
  6. Step 6: Final answer
    x = 357,599.32

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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.