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Finding the Fourth Proportional to 124,129.59, 186,048.58 and 57,428.82

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Solution

The fourth proportional to 124,129.59, 186,048.58 and 57,428.82 is: 86,075.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,129.59 : 186,048.58 = 57,428.82 : x
  2. Step 2: Convert to fraction form
    124,129.59/186,048.58 = 57,428.82/x
  3. Step 3: Cross multiply
    124,129.59x = 186,048.58 × 57,428.82
  4. Step 4: Simplify right side
    124,129.59x = 10,684,550,412.08
  5. Step 5: Solve for x
    x = 10,684,550,412.08/124,129.59
  6. Step 6: Final answer
    x = 86,075.77

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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.