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Finding the Fourth Proportional to 669,555.47, 924,004.60 and 393,932.57

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Solution

The fourth proportional to 669,555.47, 924,004.60 and 393,932.57 is: 543,637.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,555.47 : 924,004.60 = 393,932.57 : x
  2. Step 2: Convert to fraction form
    669,555.47/924,004.60 = 393,932.57/x
  3. Step 3: Cross multiply
    669,555.47x = 924,004.60 × 393,932.57
  4. Step 4: Simplify right side
    669,555.47x = 363,995,501,164.97
  5. Step 5: Solve for x
    x = 363,995,501,164.97/669,555.47
  6. Step 6: Final answer
    x = 543,637.56

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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.