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Finding the Fourth Proportional to 608,572.44, 839,547.18 and 393,781.77

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Solution

The fourth proportional to 608,572.44, 839,547.18 and 393,781.77 is: 543,235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,572.44 : 839,547.18 = 393,781.77 : x
  2. Step 2: Convert to fraction form
    608,572.44/839,547.18 = 393,781.77/x
  3. Step 3: Cross multiply
    608,572.44x = 839,547.18 × 393,781.77
  4. Step 4: Simplify right side
    608,572.44x = 330,598,374,538.91
  5. Step 5: Solve for x
    x = 330,598,374,538.91/608,572.44
  6. Step 6: Final answer
    x = 543,235.86

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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.