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Finding the Fourth Proportional to 625,313.89, 937,971.20 and 439,156.45

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Solution

The fourth proportional to 625,313.89, 937,971.20 and 439,156.45 is: 658,734.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,313.89 : 937,971.20 = 439,156.45 : x
  2. Step 2: Convert to fraction form
    625,313.89/937,971.20 = 439,156.45/x
  3. Step 3: Cross multiply
    625,313.89x = 937,971.20 × 439,156.45
  4. Step 4: Simplify right side
    625,313.89x = 411,916,102,394.24
  5. Step 5: Solve for x
    x = 411,916,102,394.24/625,313.89
  6. Step 6: Final answer
    x = 658,734.93

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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.