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Finding the Fourth Proportional to 92,081.70, 127,070.64 and 56,271.60

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Solution

The fourth proportional to 92,081.70, 127,070.64 and 56,271.60 is: 77,653.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,081.70 : 127,070.64 = 56,271.60 : x
  2. Step 2: Convert to fraction form
    92,081.70/127,070.64 = 56,271.60/x
  3. Step 3: Cross multiply
    92,081.70x = 127,070.64 × 56,271.60
  4. Step 4: Simplify right side
    92,081.70x = 7,150,468,225.82
  5. Step 5: Solve for x
    x = 7,150,468,225.82/92,081.70
  6. Step 6: Final answer
    x = 77,653.52

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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.