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Finding the Fourth Proportional to 625,312.89, 937,969.70 and 439,155.45

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Solution

The fourth proportional to 625,312.89, 937,969.70 and 439,155.45 is: 658,733.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,312.89 : 937,969.70 = 439,155.45 : x
  2. Step 2: Convert to fraction form
    625,312.89/937,969.70 = 439,155.45/x
  3. Step 3: Cross multiply
    625,312.89x = 937,969.70 × 439,155.45
  4. Step 4: Simplify right side
    625,312.89x = 411,914,503,494.09
  5. Step 5: Solve for x
    x = 411,914,503,494.09/625,312.89
  6. Step 6: Final answer
    x = 658,733.43

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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.