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Finding the Fourth Proportional to 566,866.45, 782,275.71 and 312,217.63

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Solution

The fourth proportional to 566,866.45, 782,275.71 and 312,217.63 is: 430,860.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,866.45 : 782,275.71 = 312,217.63 : x
  2. Step 2: Convert to fraction form
    566,866.45/782,275.71 = 312,217.63/x
  3. Step 3: Cross multiply
    566,866.45x = 782,275.71 × 312,217.63
  4. Step 4: Simplify right side
    566,866.45x = 244,240,268,182.77
  5. Step 5: Solve for x
    x = 244,240,268,182.77/566,866.45
  6. Step 6: Final answer
    x = 430,860.33

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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.