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Finding the Fourth Proportional to 495,876.40, 744,592.20 and 285,924.40

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Solution

The fourth proportional to 495,876.40, 744,592.20 and 285,924.40 is: 429,334.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,876.40 : 744,592.20 = 285,924.40 : x
  2. Step 2: Convert to fraction form
    495,876.40/744,592.20 = 285,924.40/x
  3. Step 3: Cross multiply
    495,876.40x = 744,592.20 × 285,924.40
  4. Step 4: Simplify right side
    495,876.40x = 212,897,078,029.68
  5. Step 5: Solve for x
    x = 212,897,078,029.68/495,876.40
  6. Step 6: Final answer
    x = 429,334.97

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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.