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Finding the Fourth Proportional to 148,219.59, 221,893.34 and 91,878.83

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Solution

The fourth proportional to 148,219.59, 221,893.34 and 91,878.83 is: 137,547.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,219.59 : 221,893.34 = 91,878.83 : x
  2. Step 2: Convert to fraction form
    148,219.59/221,893.34 = 91,878.83/x
  3. Step 3: Cross multiply
    148,219.59x = 221,893.34 × 91,878.83
  4. Step 4: Simplify right side
    148,219.59x = 20,387,298,895.13
  5. Step 5: Solve for x
    x = 20,387,298,895.13/148,219.59
  6. Step 6: Final answer
    x = 137,547.94

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1.5x scale

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.