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Finding the Fourth Proportional to 581,941.70, 803,448.51 and 398,487.26

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Solution

The fourth proportional to 581,941.70, 803,448.51 and 398,487.26 is: 550,165.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,941.70 : 803,448.51 = 398,487.26 : x
  2. Step 2: Convert to fraction form
    581,941.70/803,448.51 = 398,487.26/x
  3. Step 3: Cross multiply
    581,941.70x = 803,448.51 × 398,487.26
  4. Step 4: Simplify right side
    581,941.70x = 320,163,995,300.98
  5. Step 5: Solve for x
    x = 320,163,995,300.98/581,941.70
  6. Step 6: Final answer
    x = 550,165.07

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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.