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Finding the Fourth Proportional to 117,075.68, 161,564.90 and 63,360.69

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Solution

The fourth proportional to 117,075.68, 161,564.90 and 63,360.69 is: 87,438.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,075.68 : 161,564.90 = 63,360.69 : x
  2. Step 2: Convert to fraction form
    117,075.68/161,564.90 = 63,360.69/x
  3. Step 3: Cross multiply
    117,075.68x = 161,564.90 × 63,360.69
  4. Step 4: Simplify right side
    117,075.68x = 10,236,863,543.78
  5. Step 5: Solve for x
    x = 10,236,863,543.78/117,075.68
  6. Step 6: Final answer
    x = 87,438.00

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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.