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Finding the Fourth Proportional to 719,407.38, 992,776.59 and 397,117.62

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Solution

The fourth proportional to 719,407.38, 992,776.59 and 397,117.62 is: 548,019.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,407.38 : 992,776.59 = 397,117.62 : x
  2. Step 2: Convert to fraction form
    719,407.38/992,776.59 = 397,117.62/x
  3. Step 3: Cross multiply
    719,407.38x = 992,776.59 × 397,117.62
  4. Step 4: Simplify right side
    719,407.38x = 394,249,076,612.52
  5. Step 5: Solve for x
    x = 394,249,076,612.52/719,407.38
  6. Step 6: Final answer
    x = 548,019.23

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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.