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Finding the Fourth Proportional to 92,707.52, 139,080.64 and 30,373.12

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Solution

The fourth proportional to 92,707.52, 139,080.64 and 30,373.12 is: 45,566.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,707.52 : 139,080.64 = 30,373.12 : x
  2. Step 2: Convert to fraction form
    92,707.52/139,080.64 = 30,373.12/x
  3. Step 3: Cross multiply
    92,707.52x = 139,080.64 × 30,373.12
  4. Step 4: Simplify right side
    92,707.52x = 4,224,312,968.40
  5. Step 5: Solve for x
    x = 4,224,312,968.40/92,707.52
  6. Step 6: Final answer
    x = 45,566.02

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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.