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Finding the Fourth Proportional to 911,648.12, 1,258,881.36 and 568,070.44

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Solution

The fourth proportional to 911,648.12, 1,258,881.36 and 568,070.44 is: 784,440.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,648.12 : 1,258,881.36 = 568,070.44 : x
  2. Step 2: Convert to fraction form
    911,648.12/1,258,881.36 = 568,070.44/x
  3. Step 3: Cross multiply
    911,648.12x = 1,258,881.36 × 568,070.44
  4. Step 4: Simplify right side
    911,648.12x = 715,133,288,083.00
  5. Step 5: Solve for x
    x = 715,133,288,083.00/911,648.12
  6. Step 6: Final answer
    x = 784,440.04

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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.