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Finding the Fourth Proportional to 698,065.70, 963,419.74 and 426,075.39

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Solution

The fourth proportional to 698,065.70, 963,419.74 and 426,075.39 is: 588,038.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,065.70 : 963,419.74 = 426,075.39 : x
  2. Step 2: Convert to fraction form
    698,065.70/963,419.74 = 426,075.39/x
  3. Step 3: Cross multiply
    698,065.70x = 963,419.74 × 426,075.39
  4. Step 4: Simplify right side
    698,065.70x = 410,489,440,389.01
  5. Step 5: Solve for x
    x = 410,489,440,389.01/698,065.70
  6. Step 6: Final answer
    x = 588,038.41

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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.