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Finding the Fourth Proportional to 124,135.61, 186,057.59 and 57,434.81

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Solution

The fourth proportional to 124,135.61, 186,057.59 and 57,434.81 is: 86,084.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,135.61 : 186,057.59 = 57,434.81 : x
  2. Step 2: Convert to fraction form
    124,135.61/186,057.59 = 57,434.81/x
  3. Step 3: Cross multiply
    124,135.61x = 186,057.59 × 57,434.81
  4. Step 4: Simplify right side
    124,135.61x = 10,686,182,330.71
  5. Step 5: Solve for x
    x = 10,686,182,330.71/124,135.61
  6. Step 6: Final answer
    x = 86,084.74

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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.