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Finding the Fourth Proportional to 719,330.41, 992,700.00 and 392,662.78

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Solution

The fourth proportional to 719,330.41, 992,700.00 and 392,662.78 is: 541,887.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,330.41 : 992,700.00 = 392,662.78 : x
  2. Step 2: Convert to fraction form
    719,330.41/992,700.00 = 392,662.78/x
  3. Step 3: Cross multiply
    719,330.41x = 992,700.00 × 392,662.78
  4. Step 4: Simplify right side
    719,330.41x = 389,796,341,236.71
  5. Step 5: Solve for x
    x = 389,796,341,236.71/719,330.41
  6. Step 6: Final answer
    x = 541,887.76

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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.