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Finding the Fourth Proportional to 451,763.15, 623,421.74 and 258,158.55

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Solution

The fourth proportional to 451,763.15, 623,421.74 and 258,158.55 is: 356,252.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,763.15 : 623,421.74 = 258,158.55 : x
  2. Step 2: Convert to fraction form
    451,763.15/623,421.74 = 258,158.55/x
  3. Step 3: Cross multiply
    451,763.15x = 623,421.74 × 258,158.55
  4. Step 4: Simplify right side
    451,763.15x = 160,941,652,436.88
  5. Step 5: Solve for x
    x = 160,941,652,436.88/451,763.15
  6. Step 6: Final answer
    x = 356,252.28

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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.