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Finding the Fourth Proportional to 58,075.20, 87,112.80 and 35,816.40

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Solution

The fourth proportional to 58,075.20, 87,112.80 and 35,816.40 is: 53,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,075.20 : 87,112.80 = 35,816.40 : x
  2. Step 2: Convert to fraction form
    58,075.20/87,112.80 = 35,816.40/x
  3. Step 3: Cross multiply
    58,075.20x = 87,112.80 × 35,816.40
  4. Step 4: Simplify right side
    58,075.20x = 3,120,066,889.92
  5. Step 5: Solve for x
    x = 3,120,066,889.92/58,075.20
  6. Step 6: Final answer
    x = 53,724.60

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1.5x scale

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.