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Finding the Fourth Proportional to 170,666.50, 255,990.16 and 52,337.51

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Solution

The fourth proportional to 170,666.50, 255,990.16 and 52,337.51 is: 78,503.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,666.50 : 255,990.16 = 52,337.51 : x
  2. Step 2: Convert to fraction form
    170,666.50/255,990.16 = 52,337.51/x
  3. Step 3: Cross multiply
    170,666.50x = 255,990.16 × 52,337.51
  4. Step 4: Simplify right side
    170,666.50x = 13,397,887,558.90
  5. Step 5: Solve for x
    x = 13,397,887,558.90/170,666.50
  6. Step 6: Final answer
    x = 78,503.32

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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.