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Finding the Fourth Proportional to 412,875.60, 619,315.32 and 113,360.40

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Solution

The fourth proportional to 412,875.60, 619,315.32 and 113,360.40 is: 170,041.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,875.60 : 619,315.32 = 113,360.40 : x
  2. Step 2: Convert to fraction form
    412,875.60/619,315.32 = 113,360.40/x
  3. Step 3: Cross multiply
    412,875.60x = 619,315.32 × 113,360.40
  4. Step 4: Simplify right side
    412,875.60x = 70,205,832,401.33
  5. Step 5: Solve for x
    x = 70,205,832,401.33/412,875.60
  6. Step 6: Final answer
    x = 170,041.13

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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.