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Finding the Fourth Proportional to 124,558.93, 171,838.96 and 86,855.05

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Solution

The fourth proportional to 124,558.93, 171,838.96 and 86,855.05 is: 119,823.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,558.93 : 171,838.96 = 86,855.05 : x
  2. Step 2: Convert to fraction form
    124,558.93/171,838.96 = 86,855.05/x
  3. Step 3: Cross multiply
    124,558.93x = 171,838.96 × 86,855.05
  4. Step 4: Simplify right side
    124,558.93x = 14,925,081,462.75
  5. Step 5: Solve for x
    x = 14,925,081,462.75/124,558.93
  6. Step 6: Final answer
    x = 119,823.46

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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.