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Finding the Fourth Proportional to 58,075.74, 87,078.76 and 20,112.50

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Solution

The fourth proportional to 58,075.74, 87,078.76 and 20,112.50 is: 30,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,075.74 : 87,078.76 = 20,112.50 : x
  2. Step 2: Convert to fraction form
    58,075.74/87,078.76 = 20,112.50/x
  3. Step 3: Cross multiply
    58,075.74x = 87,078.76 × 20,112.50
  4. Step 4: Simplify right side
    58,075.74x = 1,751,371,459.94
  5. Step 5: Solve for x
    x = 1,751,371,459.94/58,075.74
  6. Step 6: Final answer
    x = 30,156.68

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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.