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Finding the Fourth Proportional to 93,709.34, 129,335.54 and 55,490.11

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Solution

The fourth proportional to 93,709.34, 129,335.54 and 55,490.11 is: 76,586.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,709.34 : 129,335.54 = 55,490.11 : x
  2. Step 2: Convert to fraction form
    93,709.34/129,335.54 = 55,490.11/x
  3. Step 3: Cross multiply
    93,709.34x = 129,335.54 × 55,490.11
  4. Step 4: Simplify right side
    93,709.34x = 7,176,843,156.90
  5. Step 5: Solve for x
    x = 7,176,843,156.90/93,709.34
  6. Step 6: Final answer
    x = 76,586.21

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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.