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Finding the Fourth Proportional to 124,307.40, 186,461.10 and 57,725.40

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Solution

The fourth proportional to 124,307.40, 186,461.10 and 57,725.40 is: 86,588.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,307.40 : 186,461.10 = 57,725.40 : x
  2. Step 2: Convert to fraction form
    124,307.40/186,461.10 = 57,725.40/x
  3. Step 3: Cross multiply
    124,307.40x = 186,461.10 × 57,725.40
  4. Step 4: Simplify right side
    124,307.40x = 10,763,541,581.94
  5. Step 5: Solve for x
    x = 10,763,541,581.94/124,307.40
  6. Step 6: Final answer
    x = 86,588.10

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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.