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Finding the Fourth Proportional to 716,117.74, 988,222.74 and 393,827.83

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Solution

The fourth proportional to 716,117.74, 988,222.74 and 393,827.83 is: 543,471.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,117.74 : 988,222.74 = 393,827.83 : x
  2. Step 2: Convert to fraction form
    716,117.74/988,222.74 = 393,827.83/x
  3. Step 3: Cross multiply
    716,117.74x = 988,222.74 × 393,827.83
  4. Step 4: Simplify right side
    716,117.74x = 389,189,617,250.85
  5. Step 5: Solve for x
    x = 389,189,617,250.85/716,117.74
  6. Step 6: Final answer
    x = 543,471.55

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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.