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Finding the Fourth Proportional to 92,907.74, 128,233.10 and 61,079.60

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Solution

The fourth proportional to 92,907.74, 128,233.10 and 61,079.60 is: 84,303.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,907.74 : 128,233.10 = 61,079.60 : x
  2. Step 2: Convert to fraction form
    92,907.74/128,233.10 = 61,079.60/x
  3. Step 3: Cross multiply
    92,907.74x = 128,233.10 × 61,079.60
  4. Step 4: Simplify right side
    92,907.74x = 7,832,425,508.20
  5. Step 5: Solve for x
    x = 7,832,425,508.20/92,907.74
  6. Step 6: Final answer
    x = 84,303.27

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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.