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Finding the Fourth Proportional to 401,877.60, 602,125.20 and 191,061.60

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Solution

The fourth proportional to 401,877.60, 602,125.20 and 191,061.60 is: 286,263.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,877.60 : 602,125.20 = 191,061.60 : x
  2. Step 2: Convert to fraction form
    401,877.60/602,125.20 = 191,061.60/x
  3. Step 3: Cross multiply
    401,877.60x = 602,125.20 × 191,061.60
  4. Step 4: Simplify right side
    401,877.60x = 115,043,004,112.32
  5. Step 5: Solve for x
    x = 115,043,004,112.32/401,877.60
  6. Step 6: Final answer
    x = 286,263.79

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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.