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Finding the Fourth Proportional to 714,452.81, 985,944.40 and 404,349.72

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Solution

The fourth proportional to 714,452.81, 985,944.40 and 404,349.72 is: 558,002.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,452.81 : 985,944.40 = 404,349.72 : x
  2. Step 2: Convert to fraction form
    714,452.81/985,944.40 = 404,349.72/x
  3. Step 3: Cross multiply
    714,452.81x = 985,944.40 × 404,349.72
  4. Step 4: Simplify right side
    714,452.81x = 398,666,345,187.81
  5. Step 5: Solve for x
    x = 398,666,345,187.81/714,452.81
  6. Step 6: Final answer
    x = 558,002.35

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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.