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Finding the Fourth Proportional to 91,804.40, 137,595.87 and 47,406.95

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Solution

The fourth proportional to 91,804.40, 137,595.87 and 47,406.95 is: 71,053.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,804.40 : 137,595.87 = 47,406.95 : x
  2. Step 2: Convert to fraction form
    91,804.40/137,595.87 = 47,406.95/x
  3. Step 3: Cross multiply
    91,804.40x = 137,595.87 × 47,406.95
  4. Step 4: Simplify right side
    91,804.40x = 6,522,999,841.32
  5. Step 5: Solve for x
    x = 6,522,999,841.32/91,804.40
  6. Step 6: Final answer
    x = 71,053.24

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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.