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Finding the Fourth Proportional to 719,411.58, 992,782.40 and 397,121.58

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Solution

The fourth proportional to 719,411.58, 992,782.40 and 397,121.58 is: 548,024.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,411.58 : 992,782.40 = 397,121.58 : x
  2. Step 2: Convert to fraction form
    719,411.58/992,782.40 = 397,121.58/x
  3. Step 3: Cross multiply
    719,411.58x = 992,782.40 × 397,121.58
  4. Step 4: Simplify right side
    719,411.58x = 394,255,313,298.58
  5. Step 5: Solve for x
    x = 394,255,313,298.58/719,411.58
  6. Step 6: Final answer
    x = 548,024.70

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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.