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Finding the Fourth Proportional to 90,648.80, 125,088.01 and 52,410.80

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Solution

The fourth proportional to 90,648.80, 125,088.01 and 52,410.80 is: 72,322.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,648.80 : 125,088.01 = 52,410.80 : x
  2. Step 2: Convert to fraction form
    90,648.80/125,088.01 = 52,410.80/x
  3. Step 3: Cross multiply
    90,648.80x = 125,088.01 × 52,410.80
  4. Step 4: Simplify right side
    90,648.80x = 6,555,962,674.51
  5. Step 5: Solve for x
    x = 6,555,962,674.51/90,648.80
  6. Step 6: Final answer
    x = 72,322.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.