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Finding the Fourth Proportional to 105,368.54, 157,886.35 and 85,550.27

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Solution

The fourth proportional to 105,368.54, 157,886.35 and 85,550.27 is: 128,190.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,368.54 : 157,886.35 = 85,550.27 : x
  2. Step 2: Convert to fraction form
    105,368.54/157,886.35 = 85,550.27/x
  3. Step 3: Cross multiply
    105,368.54x = 157,886.35 × 85,550.27
  4. Step 4: Simplify right side
    105,368.54x = 13,507,219,871.81
  5. Step 5: Solve for x
    x = 13,507,219,871.81/105,368.54
  6. Step 6: Final answer
    x = 128,190.25

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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.