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Finding the Fourth Proportional to 316,585.80, 474,804.18 and 91,886.94

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Solution

The fourth proportional to 316,585.80, 474,804.18 and 91,886.94 is: 137,808.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,585.80 : 474,804.18 = 91,886.94 : x
  2. Step 2: Convert to fraction form
    316,585.80/474,804.18 = 91,886.94/x
  3. Step 3: Cross multiply
    316,585.80x = 474,804.18 × 91,886.94
  4. Step 4: Simplify right side
    316,585.80x = 43,628,303,199.41
  5. Step 5: Solve for x
    x = 43,628,303,199.41/316,585.80
  6. Step 6: Final answer
    x = 137,808.78

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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.