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Finding the Fourth Proportional to 92,752.56, 139,068.36 and 61,066.71

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Solution

The fourth proportional to 92,752.56, 139,068.36 and 61,066.71 is: 91,560.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,752.56 : 139,068.36 = 61,066.71 : x
  2. Step 2: Convert to fraction form
    92,752.56/139,068.36 = 61,066.71/x
  3. Step 3: Cross multiply
    92,752.56x = 139,068.36 × 61,066.71
  4. Step 4: Simplify right side
    92,752.56x = 8,492,447,210.30
  5. Step 5: Solve for x
    x = 8,492,447,210.30/92,752.56
  6. Step 6: Final answer
    x = 91,560.25

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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.