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Finding the Fourth Proportional to 163,706.80, 245,430.60 and 89,834.80

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Solution

The fourth proportional to 163,706.80, 245,430.60 and 89,834.80 is: 134,681.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,706.80 : 245,430.60 = 89,834.80 : x
  2. Step 2: Convert to fraction form
    163,706.80/245,430.60 = 89,834.80/x
  3. Step 3: Cross multiply
    163,706.80x = 245,430.60 × 89,834.80
  4. Step 4: Simplify right side
    163,706.80x = 22,048,208,864.88
  5. Step 5: Solve for x
    x = 22,048,208,864.88/163,706.80
  6. Step 6: Final answer
    x = 134,681.08

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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.