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Finding the Fourth Proportional to 59,765.79, 89,622.77 and 20,312.31

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Solution

The fourth proportional to 59,765.79, 89,622.77 and 20,312.31 is: 30,459.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,765.79 : 89,622.77 = 20,312.31 : x
  2. Step 2: Convert to fraction form
    59,765.79/89,622.77 = 20,312.31/x
  3. Step 3: Cross multiply
    59,765.79x = 89,622.77 × 20,312.31
  4. Step 4: Simplify right side
    59,765.79x = 1,820,445,385.74
  5. Step 5: Solve for x
    x = 1,820,445,385.74/59,765.79
  6. Step 6: Final answer
    x = 30,459.66

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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.