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Finding the Fourth Proportional to 692,705.57, 955,949.93 and 386,771.61

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Solution

The fourth proportional to 692,705.57, 955,949.93 and 386,771.61 is: 533,753.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,705.57 : 955,949.93 = 386,771.61 : x
  2. Step 2: Convert to fraction form
    692,705.57/955,949.93 = 386,771.61/x
  3. Step 3: Cross multiply
    692,705.57x = 955,949.93 × 386,771.61
  4. Step 4: Simplify right side
    692,705.57x = 369,734,290,141.82
  5. Step 5: Solve for x
    x = 369,734,290,141.82/692,705.57
  6. Step 6: Final answer
    x = 533,753.89

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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.