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Finding the Fourth Proportional to 619,254.90, 865,907.10 and 619,254.90

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Solution

The fourth proportional to 619,254.90, 865,907.10 and 619,254.90 is: 865,907.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,254.90 : 865,907.10 = 619,254.90 : x
  2. Step 2: Convert to fraction form
    619,254.90/865,907.10 = 619,254.90/x
  3. Step 3: Cross multiply
    619,254.90x = 865,907.10 × 619,254.90
  4. Step 4: Simplify right side
    619,254.90x = 536,217,214,619.79
  5. Step 5: Solve for x
    x = 536,217,214,619.79/619,254.90
  6. Step 6: Final answer
    x = 865,907.10

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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.