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Finding the Fourth Proportional to 668,851.98, 922,714.34 and 396,931.34

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Solution

The fourth proportional to 668,851.98, 922,714.34 and 396,931.34 is: 547,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,851.98 : 922,714.34 = 396,931.34 : x
  2. Step 2: Convert to fraction form
    668,851.98/922,714.34 = 396,931.34/x
  3. Step 3: Cross multiply
    668,851.98x = 922,714.34 × 396,931.34
  4. Step 4: Simplify right side
    668,851.98x = 366,254,239,413.42
  5. Step 5: Solve for x
    x = 366,254,239,413.42/668,851.98
  6. Step 6: Final answer
    x = 547,586.39

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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.