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Finding the Fourth Proportional to 719,151.21, 992,448.89 and 396,881.64

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Solution

The fourth proportional to 719,151.21, 992,448.89 and 396,881.64 is: 547,707.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,151.21 : 992,448.89 = 396,881.64 : x
  2. Step 2: Convert to fraction form
    719,151.21/992,448.89 = 396,881.64/x
  3. Step 3: Cross multiply
    719,151.21x = 992,448.89 × 396,881.64
  4. Step 4: Simplify right side
    719,151.21x = 393,884,742,583.28
  5. Step 5: Solve for x
    x = 393,884,742,583.28/719,151.21
  6. Step 6: Final answer
    x = 547,707.82

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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.