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Finding the Fourth Proportional to 622,897.40, 934,346.10 and 581,425.40

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Solution

The fourth proportional to 622,897.40, 934,346.10 and 581,425.40 is: 872,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,897.40 : 934,346.10 = 581,425.40 : x
  2. Step 2: Convert to fraction form
    622,897.40/934,346.10 = 581,425.40/x
  3. Step 3: Cross multiply
    622,897.40x = 934,346.10 × 581,425.40
  4. Step 4: Simplify right side
    622,897.40x = 543,252,554,930.94
  5. Step 5: Solve for x
    x = 543,252,554,930.94/622,897.40
  6. Step 6: Final answer
    x = 872,138.10

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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.