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Finding the Fourth Proportional to 191,331.70, 286,985.40 and 64,971.70

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Solution

The fourth proportional to 191,331.70, 286,985.40 and 64,971.70 is: 97,453.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,331.70 : 286,985.40 = 64,971.70 : x
  2. Step 2: Convert to fraction form
    191,331.70/286,985.40 = 64,971.70/x
  3. Step 3: Cross multiply
    191,331.70x = 286,985.40 × 64,971.70
  4. Step 4: Simplify right side
    191,331.70x = 18,645,929,313.18
  5. Step 5: Solve for x
    x = 18,645,929,313.18/191,331.70
  6. Step 6: Final answer
    x = 97,453.42

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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.