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Finding the Fourth Proportional to 528,220.80, 794,080.80 and 451,238.40

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Solution

The fourth proportional to 528,220.80, 794,080.80 and 451,238.40 is: 678,352.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,220.80 : 794,080.80 = 451,238.40 : x
  2. Step 2: Convert to fraction form
    528,220.80/794,080.80 = 451,238.40/x
  3. Step 3: Cross multiply
    528,220.80x = 794,080.80 × 451,238.40
  4. Step 4: Simplify right side
    528,220.80x = 358,319,749,662.72
  5. Step 5: Solve for x
    x = 358,319,749,662.72/528,220.80
  6. Step 6: Final answer
    x = 678,352.21

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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.