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Finding the Fourth Proportional to 443,904.18, 665,783.37 and 191,116.59

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Solution

The fourth proportional to 443,904.18, 665,783.37 and 191,116.59 is: 286,643.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,904.18 : 665,783.37 = 191,116.59 : x
  2. Step 2: Convert to fraction form
    443,904.18/665,783.37 = 191,116.59/x
  3. Step 3: Cross multiply
    443,904.18x = 665,783.37 × 191,116.59
  4. Step 4: Simplify right side
    443,904.18x = 127,242,247,353.11
  5. Step 5: Solve for x
    x = 127,242,247,353.11/443,904.18
  6. Step 6: Final answer
    x = 286,643.50

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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.