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Finding the Fourth Proportional to 719,360.94, 992,718.20 and 397,071.12

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Solution

The fourth proportional to 719,360.94, 992,718.20 and 397,071.12 is: 547,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,360.94 : 992,718.20 = 397,071.12 : x
  2. Step 2: Convert to fraction form
    719,360.94/992,718.20 = 397,071.12/x
  3. Step 3: Cross multiply
    719,360.94x = 992,718.20 × 397,071.12
  4. Step 4: Simplify right side
    719,360.94x = 394,179,727,518.38
  5. Step 5: Solve for x
    x = 394,179,727,518.38/719,360.94
  6. Step 6: Final answer
    x = 547,958.20

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Half scale
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Double scale
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Similar ratio
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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.