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Finding the Fourth Proportional to 85,669.60, 128,504.40 and 59,347.84

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Solution

The fourth proportional to 85,669.60, 128,504.40 and 59,347.84 is: 89,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,669.60 : 128,504.40 = 59,347.84 : x
  2. Step 2: Convert to fraction form
    85,669.60/128,504.40 = 59,347.84/x
  3. Step 3: Cross multiply
    85,669.60x = 128,504.40 × 59,347.84
  4. Step 4: Simplify right side
    85,669.60x = 7,626,458,570.50
  5. Step 5: Solve for x
    x = 7,626,458,570.50/85,669.60
  6. Step 6: Final answer
    x = 89,021.76

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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.