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Finding the Fourth Proportional to 719,335.66, 992,683.30 and 397,045.84

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Solution

The fourth proportional to 719,335.66, 992,683.30 and 397,045.84 is: 547,923.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,335.66 : 992,683.30 = 397,045.84 : x
  2. Step 2: Convert to fraction form
    719,335.66/992,683.30 = 397,045.84/x
  3. Step 3: Cross multiply
    719,335.66x = 992,683.30 × 397,045.84
  4. Step 4: Simplify right side
    719,335.66x = 394,140,774,702.47
  5. Step 5: Solve for x
    x = 394,140,774,702.47/719,335.66
  6. Step 6: Final answer
    x = 547,923.31

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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.