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Finding the Fourth Proportional to 61,045.51, 91,708.60 and 43,075.10

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Solution

The fourth proportional to 61,045.51, 91,708.60 and 43,075.10 is: 64,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,045.51 : 91,708.60 = 43,075.10 : x
  2. Step 2: Convert to fraction form
    61,045.51/91,708.60 = 43,075.10/x
  3. Step 3: Cross multiply
    61,045.51x = 91,708.60 × 43,075.10
  4. Step 4: Simplify right side
    61,045.51x = 3,950,356,994.28
  5. Step 5: Solve for x
    x = 3,950,356,994.28/61,045.51
  6. Step 6: Final answer
    x = 64,711.67

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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.