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Finding the Fourth Proportional to 330,335.81, 495,577.55 and 105,709.74

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Solution

The fourth proportional to 330,335.81, 495,577.55 and 105,709.74 is: 158,588.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,335.81 : 495,577.55 = 105,709.74 : x
  2. Step 2: Convert to fraction form
    330,335.81/495,577.55 = 105,709.74/x
  3. Step 3: Cross multiply
    330,335.81x = 495,577.55 × 105,709.74
  4. Step 4: Simplify right side
    330,335.81x = 52,387,373,960.34
  5. Step 5: Solve for x
    x = 52,387,373,960.34/330,335.81
  6. Step 6: Final answer
    x = 158,588.24

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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.