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Finding the Fourth Proportional to 249,661.68, 374,477.92 and 72,164.76

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Solution

The fourth proportional to 249,661.68, 374,477.92 and 72,164.76 is: 108,242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,661.68 : 374,477.92 = 72,164.76 : x
  2. Step 2: Convert to fraction form
    249,661.68/374,477.92 = 72,164.76/x
  3. Step 3: Cross multiply
    249,661.68x = 374,477.92 × 72,164.76
  4. Step 4: Simplify right side
    249,661.68x = 27,024,109,222.10
  5. Step 5: Solve for x
    x = 27,024,109,222.10/249,661.68
  6. Step 6: Final answer
    x = 108,242.92

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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.