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Finding the Fourth Proportional to 157,878.81, 217,875.89 and 86,263.27

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Solution

The fourth proportional to 157,878.81, 217,875.89 and 86,263.27 is: 119,045.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,878.81 : 217,875.89 = 86,263.27 : x
  2. Step 2: Convert to fraction form
    157,878.81/217,875.89 = 86,263.27/x
  3. Step 3: Cross multiply
    157,878.81x = 217,875.89 × 86,263.27
  4. Step 4: Simplify right side
    157,878.81x = 18,794,686,396.53
  5. Step 5: Solve for x
    x = 18,794,686,396.53/157,878.81
  6. Step 6: Final answer
    x = 119,045.02

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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.