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Finding the Fourth Proportional to 191,312.70, 286,623.45 and 163,664.70

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Solution

The fourth proportional to 191,312.70, 286,623.45 and 163,664.70 is: 245,201.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,312.70 : 286,623.45 = 163,664.70 : x
  2. Step 2: Convert to fraction form
    191,312.70/286,623.45 = 163,664.70/x
  3. Step 3: Cross multiply
    191,312.70x = 286,623.45 × 163,664.70
  4. Step 4: Simplify right side
    191,312.70x = 46,910,140,957.22
  5. Step 5: Solve for x
    x = 46,910,140,957.22/191,312.70
  6. Step 6: Final answer
    x = 245,201.40

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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.