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Finding the Fourth Proportional to 922,322.25, 1,272,804.71 and 519,914.25

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Solution

The fourth proportional to 922,322.25, 1,272,804.71 and 519,914.25 is: 717,481.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,322.25 : 1,272,804.71 = 519,914.25 : x
  2. Step 2: Convert to fraction form
    922,322.25/1,272,804.71 = 519,914.25/x
  3. Step 3: Cross multiply
    922,322.25x = 1,272,804.71 × 519,914.25
  4. Step 4: Simplify right side
    922,322.25x = 661,749,303,596.55
  5. Step 5: Solve for x
    x = 661,749,303,596.55/922,322.25
  6. Step 6: Final answer
    x = 717,481.67

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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.