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Finding the Fourth Proportional to 89,632.80, 134,740.80 and 63,518.40

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Solution

The fourth proportional to 89,632.80, 134,740.80 and 63,518.40 is: 95,484.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,632.80 : 134,740.80 = 63,518.40 : x
  2. Step 2: Convert to fraction form
    89,632.80/134,740.80 = 63,518.40/x
  3. Step 3: Cross multiply
    89,632.80x = 134,740.80 × 63,518.40
  4. Step 4: Simplify right side
    89,632.80x = 8,558,520,030.72
  5. Step 5: Solve for x
    x = 8,558,520,030.72/89,632.80
  6. Step 6: Final answer
    x = 95,484.24

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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.