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Finding the Fourth Proportional to 46,291.40, 69,030.61 and 45,870.40

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Solution

The fourth proportional to 46,291.40, 69,030.61 and 45,870.40 is: 68,402.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,291.40 : 69,030.61 = 45,870.40 : x
  2. Step 2: Convert to fraction form
    46,291.40/69,030.61 = 45,870.40/x
  3. Step 3: Cross multiply
    46,291.40x = 69,030.61 × 45,870.40
  4. Step 4: Simplify right side
    46,291.40x = 3,166,461,692.94
  5. Step 5: Solve for x
    x = 3,166,461,692.94/46,291.40
  6. Step 6: Final answer
    x = 68,402.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.