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Finding the Fourth Proportional to 96,784.40, 145,061.40 and 40,624.40

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Solution

The fourth proportional to 96,784.40, 145,061.40 and 40,624.40 is: 60,888.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,784.40 : 145,061.40 = 40,624.40 : x
  2. Step 2: Convert to fraction form
    96,784.40/145,061.40 = 40,624.40/x
  3. Step 3: Cross multiply
    96,784.40x = 145,061.40 × 40,624.40
  4. Step 4: Simplify right side
    96,784.40x = 5,893,032,338.16
  5. Step 5: Solve for x
    x = 5,893,032,338.16/96,784.40
  6. Step 6: Final answer
    x = 60,888.25

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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.