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Finding the Fourth Proportional to 92,920.60, 128,220.14 and 51,526.55

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Solution

The fourth proportional to 92,920.60, 128,220.14 and 51,526.55 is: 71,100.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,920.60 : 128,220.14 = 51,526.55 : x
  2. Step 2: Convert to fraction form
    92,920.60/128,220.14 = 51,526.55/x
  3. Step 3: Cross multiply
    92,920.60x = 128,220.14 × 51,526.55
  4. Step 4: Simplify right side
    92,920.60x = 6,606,740,555.98
  5. Step 5: Solve for x
    x = 6,606,740,555.98/92,920.60
  6. Step 6: Final answer
    x = 71,100.93

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1.5x scale

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.