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Finding the Fourth Proportional to 58,219.20, 87,415.20 and 40,766.40

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Solution

The fourth proportional to 58,219.20, 87,415.20 and 40,766.40 is: 61,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,219.20 : 87,415.20 = 40,766.40 : x
  2. Step 2: Convert to fraction form
    58,219.20/87,415.20 = 40,766.40/x
  3. Step 3: Cross multiply
    58,219.20x = 87,415.20 × 40,766.40
  4. Step 4: Simplify right side
    58,219.20x = 3,563,603,009.28
  5. Step 5: Solve for x
    x = 3,563,603,009.28/58,219.20
  6. Step 6: Final answer
    x = 61,210.10

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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.