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Finding the Fourth Proportional to 128,185.66, 192,319.53 and 61,630.66

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Solution

The fourth proportional to 128,185.66, 192,319.53 and 61,630.66 is: 92,465.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185.66 : 192,319.53 = 61,630.66 : x
  2. Step 2: Convert to fraction form
    128,185.66/192,319.53 = 61,630.66/x
  3. Step 3: Cross multiply
    128,185.66x = 192,319.53 × 61,630.66
  4. Step 4: Simplify right side
    128,185.66x = 11,852,779,564.79
  5. Step 5: Solve for x
    x = 11,852,779,564.79/128,185.66
  6. Step 6: Final answer
    x = 92,465.72

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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.