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Finding the Fourth Proportional to 116,075.70, 174,113.55 and 86,551.20

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Solution

The fourth proportional to 116,075.70, 174,113.55 and 86,551.20 is: 129,826.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,075.70 : 174,113.55 = 86,551.20 : x
  2. Step 2: Convert to fraction form
    116,075.70/174,113.55 = 86,551.20/x
  3. Step 3: Cross multiply
    116,075.70x = 174,113.55 × 86,551.20
  4. Step 4: Simplify right side
    116,075.70x = 15,069,736,688.76
  5. Step 5: Solve for x
    x = 15,069,736,688.76/116,075.70
  6. Step 6: Final answer
    x = 129,826.80

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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.