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Finding the Fourth Proportional to 566,662.47, 781,999.43 and 312,022.77

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Solution

The fourth proportional to 566,662.47, 781,999.43 and 312,022.77 is: 430,594.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,662.47 : 781,999.43 = 312,022.77 : x
  2. Step 2: Convert to fraction form
    566,662.47/781,999.43 = 312,022.77/x
  3. Step 3: Cross multiply
    566,662.47x = 781,999.43 × 312,022.77
  4. Step 4: Simplify right side
    566,662.47x = 244,001,626,726.91
  5. Step 5: Solve for x
    x = 244,001,626,726.91/566,662.47
  6. Step 6: Final answer
    x = 430,594.29

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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.