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Finding the Fourth Proportional to 581,427.40, 872,141.10 and 382,361.80

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Solution

The fourth proportional to 581,427.40, 872,141.10 and 382,361.80 is: 573,542.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,427.40 : 872,141.10 = 382,361.80 : x
  2. Step 2: Convert to fraction form
    581,427.40/872,141.10 = 382,361.80/x
  3. Step 3: Cross multiply
    581,427.40x = 872,141.10 × 382,361.80
  4. Step 4: Simplify right side
    581,427.40x = 333,473,440,849.98
  5. Step 5: Solve for x
    x = 333,473,440,849.98/581,427.40
  6. Step 6: Final answer
    x = 573,542.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.