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Finding the Fourth Proportional to 64,886.81, 89,544.92 and 38,036.93

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Solution

The fourth proportional to 64,886.81, 89,544.92 and 38,036.93 is: 52,491.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,886.81 : 89,544.92 = 38,036.93 : x
  2. Step 2: Convert to fraction form
    64,886.81/89,544.92 = 38,036.93/x
  3. Step 3: Cross multiply
    64,886.81x = 89,544.92 × 38,036.93
  4. Step 4: Simplify right side
    64,886.81x = 3,406,013,215.99
  5. Step 5: Solve for x
    x = 3,406,013,215.99/64,886.81
  6. Step 6: Final answer
    x = 52,491.62

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1.5x scale

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.