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Finding the Fourth Proportional to 442,907.70, 618,671.10 and 442,907.70

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Solution

The fourth proportional to 442,907.70, 618,671.10 and 442,907.70 is: 618,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,907.70 : 618,671.10 = 442,907.70 : x
  2. Step 2: Convert to fraction form
    442,907.70/618,671.10 = 442,907.70/x
  3. Step 3: Cross multiply
    442,907.70x = 618,671.10 × 442,907.70
  4. Step 4: Simplify right side
    442,907.70x = 274,014,193,957.47
  5. Step 5: Solve for x
    x = 274,014,193,957.47/442,907.70
  6. Step 6: Final answer
    x = 618,671.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.