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Finding the Fourth Proportional to 128,097.34, 191,888.54 and 63,861.64

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Solution

The fourth proportional to 128,097.34, 191,888.54 and 63,861.64 is: 95,664.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,097.34 : 191,888.54 = 63,861.64 : x
  2. Step 2: Convert to fraction form
    128,097.34/191,888.54 = 63,861.64/x
  3. Step 3: Cross multiply
    128,097.34x = 191,888.54 × 63,861.64
  4. Step 4: Simplify right side
    128,097.34x = 12,254,316,861.61
  5. Step 5: Solve for x
    x = 12,254,316,861.61/128,097.34
  6. Step 6: Final answer
    x = 95,664.10

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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.