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Finding the Fourth Proportional to 357,878.72, 536,484.36 and 121,056.60

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Solution

The fourth proportional to 357,878.72, 536,484.36 and 121,056.60 is: 181,472.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,878.72 : 536,484.36 = 121,056.60 : x
  2. Step 2: Convert to fraction form
    357,878.72/536,484.36 = 121,056.60/x
  3. Step 3: Cross multiply
    357,878.72x = 536,484.36 × 121,056.60
  4. Step 4: Simplify right side
    357,878.72x = 64,944,972,574.78
  5. Step 5: Solve for x
    x = 64,944,972,574.78/357,878.72
  6. Step 6: Final answer
    x = 181,472.02

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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.