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Finding the Fourth Proportional to 107,878.65, 148,880.43 and 62,572.11

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Solution

The fourth proportional to 107,878.65, 148,880.43 and 62,572.11 is: 86,354.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,878.65 : 148,880.43 = 62,572.11 : x
  2. Step 2: Convert to fraction form
    107,878.65/148,880.43 = 62,572.11/x
  3. Step 3: Cross multiply
    107,878.65x = 148,880.43 × 62,572.11
  4. Step 4: Simplify right side
    107,878.65x = 9,315,762,642.81
  5. Step 5: Solve for x
    x = 9,315,762,642.81/107,878.65
  6. Step 6: Final answer
    x = 86,354.09

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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.