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Finding the Fourth Proportional to 57,799.70, 81,075.10 and 57,799.70

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Solution

The fourth proportional to 57,799.70, 81,075.10 and 57,799.70 is: 81,075.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,799.70 : 81,075.10 = 57,799.70 : x
  2. Step 2: Convert to fraction form
    57,799.70/81,075.10 = 57,799.70/x
  3. Step 3: Cross multiply
    57,799.70x = 81,075.10 × 57,799.70
  4. Step 4: Simplify right side
    57,799.70x = 4,686,116,457.47
  5. Step 5: Solve for x
    x = 4,686,116,457.47/57,799.70
  6. Step 6: Final answer
    x = 81,075.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.