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Finding the Fourth Proportional to 719,458.37, 992,854.70 and 392,771.89

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Solution

The fourth proportional to 719,458.37, 992,854.70 and 392,771.89 is: 542,026.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,458.37 : 992,854.70 = 392,771.89 : x
  2. Step 2: Convert to fraction form
    719,458.37/992,854.70 = 392,771.89/x
  3. Step 3: Cross multiply
    719,458.37x = 992,854.70 × 392,771.89
  4. Step 4: Simplify right side
    719,458.37x = 389,965,417,014.38
  5. Step 5: Solve for x
    x = 389,965,417,014.38/719,458.37
  6. Step 6: Final answer
    x = 542,026.38

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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.