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Finding the Fourth Proportional to 92,810.70, 139,267.08 and 40,220.64

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Solution

The fourth proportional to 92,810.70, 139,267.08 and 40,220.64 is: 60,353.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,810.70 : 139,267.08 = 40,220.64 : x
  2. Step 2: Convert to fraction form
    92,810.70/139,267.08 = 40,220.64/x
  3. Step 3: Cross multiply
    92,810.70x = 139,267.08 × 40,220.64
  4. Step 4: Simplify right side
    92,810.70x = 5,601,411,088.53
  5. Step 5: Solve for x
    x = 5,601,411,088.53/92,810.70
  6. Step 6: Final answer
    x = 60,353.07

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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.