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Finding the Fourth Proportional to 118,526.70, 163,565.70 and 64,811.16

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Solution

The fourth proportional to 118,526.70, 163,565.70 and 64,811.16 is: 89,438.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,526.70 : 163,565.70 = 64,811.16 : x
  2. Step 2: Convert to fraction form
    118,526.70/163,565.70 = 64,811.16/x
  3. Step 3: Cross multiply
    118,526.70x = 163,565.70 × 64,811.16
  4. Step 4: Simplify right side
    118,526.70x = 10,600,882,753.21
  5. Step 5: Solve for x
    x = 10,600,882,753.21/118,526.70
  6. Step 6: Final answer
    x = 89,438.77

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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.