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Finding the Fourth Proportional to 191,416.80, 287,081.28 and 56,446.08

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Solution

The fourth proportional to 191,416.80, 287,081.28 and 56,446.08 is: 84,656.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,416.80 : 287,081.28 = 56,446.08 : x
  2. Step 2: Convert to fraction form
    191,416.80/287,081.28 = 56,446.08/x
  3. Step 3: Cross multiply
    191,416.80x = 287,081.28 × 56,446.08
  4. Step 4: Simplify right side
    191,416.80x = 16,204,612,897.38
  5. Step 5: Solve for x
    x = 16,204,612,897.38/191,416.80
  6. Step 6: Final answer
    x = 84,656.17

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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.