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Finding the Fourth Proportional to 67,754.64, 93,492.54 and 39,075.36

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Solution

The fourth proportional to 67,754.64, 93,492.54 and 39,075.36 is: 53,918.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,754.64 : 93,492.54 = 39,075.36 : x
  2. Step 2: Convert to fraction form
    67,754.64/93,492.54 = 39,075.36/x
  3. Step 3: Cross multiply
    67,754.64x = 93,492.54 × 39,075.36
  4. Step 4: Simplify right side
    67,754.64x = 3,653,254,657.81
  5. Step 5: Solve for x
    x = 3,653,254,657.81/67,754.64
  6. Step 6: Final answer
    x = 53,918.89

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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.