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Finding the Fourth Proportional to 92,878.60, 128,192.88 and 61,050.46

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Solution

The fourth proportional to 92,878.60, 128,192.88 and 61,050.46 is: 84,263.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,878.60 : 128,192.88 = 61,050.46 : x
  2. Step 2: Convert to fraction form
    92,878.60/128,192.88 = 61,050.46/x
  3. Step 3: Cross multiply
    92,878.60x = 128,192.88 × 61,050.46
  4. Step 4: Simplify right side
    92,878.60x = 7,826,234,292.72
  5. Step 5: Solve for x
    x = 7,826,234,292.72/92,878.60
  6. Step 6: Final answer
    x = 84,263.05

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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.