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Finding the Fourth Proportional to 907,695.88, 1,361,691.60 and 268,064.32

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Solution

The fourth proportional to 907,695.88, 1,361,691.60 and 268,064.32 is: 402,140.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,695.88 : 1,361,691.60 = 268,064.32 : x
  2. Step 2: Convert to fraction form
    907,695.88/1,361,691.60 = 268,064.32/x
  3. Step 3: Cross multiply
    907,695.88x = 1,361,691.60 × 268,064.32
  4. Step 4: Simplify right side
    907,695.88x = 365,020,932,803.71
  5. Step 5: Solve for x
    x = 365,020,932,803.71/907,695.88
  6. Step 6: Final answer
    x = 402,140.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.