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Finding the Fourth Proportional to 621,106.92, 857,552.46 and 475,656.06

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Solution

The fourth proportional to 621,106.92, 857,552.46 and 475,656.06 is: 656,730.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,106.92 : 857,552.46 = 475,656.06 : x
  2. Step 2: Convert to fraction form
    621,106.92/857,552.46 = 475,656.06/x
  3. Step 3: Cross multiply
    621,106.92x = 857,552.46 × 475,656.06
  4. Step 4: Simplify right side
    621,106.92x = 407,900,024,366.91
  5. Step 5: Solve for x
    x = 407,900,024,366.91/621,106.92
  6. Step 6: Final answer
    x = 656,730.77

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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.