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Finding the Fourth Proportional to 692,000.21, 954,960.42 and 390,194.21

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Solution

The fourth proportional to 692,000.21, 954,960.42 and 390,194.21 is: 538,468.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,000.21 : 954,960.42 = 390,194.21 : x
  2. Step 2: Convert to fraction form
    692,000.21/954,960.42 = 390,194.21/x
  3. Step 3: Cross multiply
    692,000.21x = 954,960.42 × 390,194.21
  4. Step 4: Simplify right side
    692,000.21x = 372,620,021,888.37
  5. Step 5: Solve for x
    x = 372,620,021,888.37/692,000.21
  6. Step 6: Final answer
    x = 538,468.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.