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Finding the Fourth Proportional to 93,168.75, 128,572.34 and 52,890.15

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Solution

The fourth proportional to 93,168.75, 128,572.34 and 52,890.15 is: 72,988.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,168.75 : 128,572.34 = 52,890.15 : x
  2. Step 2: Convert to fraction form
    93,168.75/128,572.34 = 52,890.15/x
  3. Step 3: Cross multiply
    93,168.75x = 128,572.34 × 52,890.15
  4. Step 4: Simplify right side
    93,168.75x = 6,800,210,084.00
  5. Step 5: Solve for x
    x = 6,800,210,084.00/93,168.75
  6. Step 6: Final answer
    x = 72,988.10

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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.