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Finding the Fourth Proportional to 92,756.16, 139,132.53 and 85,532.58

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Solution

The fourth proportional to 92,756.16, 139,132.53 and 85,532.58 is: 128,297.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,756.16 : 139,132.53 = 85,532.58 : x
  2. Step 2: Convert to fraction form
    92,756.16/139,132.53 = 85,532.58/x
  3. Step 3: Cross multiply
    92,756.16x = 139,132.53 × 85,532.58
  4. Step 4: Simplify right side
    92,756.16x = 11,900,364,252.83
  5. Step 5: Solve for x
    x = 11,900,364,252.83/92,756.16
  6. Step 6: Final answer
    x = 128,297.29

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1.5x scale

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.