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Finding the Fourth Proportional to 581,908.92, 802,578.36 and 398,256.12

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Solution

The fourth proportional to 581,908.92, 802,578.36 and 398,256.12 is: 549,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,908.92 : 802,578.36 = 398,256.12 : x
  2. Step 2: Convert to fraction form
    581,908.92/802,578.36 = 398,256.12/x
  3. Step 3: Cross multiply
    581,908.92x = 802,578.36 × 398,256.12
  4. Step 4: Simplify right side
    581,908.92x = 319,631,743,649.56
  5. Step 5: Solve for x
    x = 319,631,743,649.56/581,908.92
  6. Step 6: Final answer
    x = 549,281.40

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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.