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Finding the Fourth Proportional to 719,501.76, 992,886.30 and 397,204.93

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Solution

The fourth proportional to 719,501.76, 992,886.30 and 397,204.93 is: 548,128.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,501.76 : 992,886.30 = 397,204.93 : x
  2. Step 2: Convert to fraction form
    719,501.76/992,886.30 = 397,204.93/x
  3. Step 3: Cross multiply
    719,501.76x = 992,886.30 × 397,204.93
  4. Step 4: Simplify right side
    719,501.76x = 394,379,333,289.46
  5. Step 5: Solve for x
    x = 394,379,333,289.46/719,501.76
  6. Step 6: Final answer
    x = 548,128.38

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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.