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Finding the Fourth Proportional to 191,312.75, 286,874.80 and 64,906.92

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Solution

The fourth proportional to 191,312.75, 286,874.80 and 64,906.92 is: 97,328.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,312.75 : 286,874.80 = 64,906.92 : x
  2. Step 2: Convert to fraction form
    191,312.75/286,874.80 = 64,906.92/x
  3. Step 3: Cross multiply
    191,312.75x = 286,874.80 × 64,906.92
  4. Step 4: Simplify right side
    191,312.75x = 18,620,159,531.35
  5. Step 5: Solve for x
    x = 18,620,159,531.35/191,312.75
  6. Step 6: Final answer
    x = 97,328.38

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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.