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Finding the Fourth Proportional to 65,870.93, 98,809.13 and 19,123.81

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Solution

The fourth proportional to 65,870.93, 98,809.13 and 19,123.81 is: 28,686.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,870.93 : 98,809.13 = 19,123.81 : x
  2. Step 2: Convert to fraction form
    65,870.93/98,809.13 = 19,123.81/x
  3. Step 3: Cross multiply
    65,870.93x = 98,809.13 × 19,123.81
  4. Step 4: Simplify right side
    65,870.93x = 1,889,606,685.74
  5. Step 5: Solve for x
    x = 1,889,606,685.74/65,870.93
  6. Step 6: Final answer
    x = 28,686.50

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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.