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Finding the Fourth Proportional to 614,821.44, 920,985.60 and 348,021.12

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Solution

The fourth proportional to 614,821.44, 920,985.60 and 348,021.12 is: 521,326.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,821.44 : 920,985.60 = 348,021.12 : x
  2. Step 2: Convert to fraction form
    614,821.44/920,985.60 = 348,021.12/x
  3. Step 3: Cross multiply
    614,821.44x = 920,985.60 × 348,021.12
  4. Step 4: Simplify right side
    614,821.44x = 320,522,440,015.87
  5. Step 5: Solve for x
    x = 320,522,440,015.87/614,821.44
  6. Step 6: Final answer
    x = 521,326.06

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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.