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Finding the Fourth Proportional to 714,313.89, 986,060.63 and 438,716.39

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Solution

The fourth proportional to 714,313.89, 986,060.63 and 438,716.39 is: 605,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,313.89 : 986,060.63 = 438,716.39 : x
  2. Step 2: Convert to fraction form
    714,313.89/986,060.63 = 438,716.39/x
  3. Step 3: Cross multiply
    714,313.89x = 986,060.63 × 438,716.39
  4. Step 4: Simplify right side
    714,313.89x = 432,600,956,081.21
  5. Step 5: Solve for x
    x = 432,600,956,081.21/714,313.89
  6. Step 6: Final answer
    x = 605,617.45

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Double scale
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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.