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Finding the Fourth Proportional to 93,999.70, 129,718.69 and 51,558.40

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Solution

The fourth proportional to 93,999.70, 129,718.69 and 51,558.40 is: 71,150.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,999.70 : 129,718.69 = 51,558.40 : x
  2. Step 2: Convert to fraction form
    93,999.70/129,718.69 = 51,558.40/x
  3. Step 3: Cross multiply
    93,999.70x = 129,718.69 × 51,558.40
  4. Step 4: Simplify right side
    93,999.70x = 6,688,088,106.50
  5. Step 5: Solve for x
    x = 6,688,088,106.50/93,999.70
  6. Step 6: Final answer
    x = 71,150.10

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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.