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Finding the Fourth Proportional to 634,640.40, 951,462.21 and 434,353.58

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Solution

The fourth proportional to 634,640.40, 951,462.21 and 434,353.58 is: 651,189.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,640.40 : 951,462.21 = 434,353.58 : x
  2. Step 2: Convert to fraction form
    634,640.40/951,462.21 = 434,353.58/x
  3. Step 3: Cross multiply
    634,640.40x = 951,462.21 × 434,353.58
  4. Step 4: Simplify right side
    634,640.40x = 413,271,014,417.29
  5. Step 5: Solve for x
    x = 413,271,014,417.29/634,640.40
  6. Step 6: Final answer
    x = 651,189.26

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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.