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Finding the Fourth Proportional to 191,018.20, 286,656.90 and 124,295.80

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Solution

The fourth proportional to 191,018.20, 286,656.90 and 124,295.80 is: 186,528.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,018.20 : 286,656.90 = 124,295.80 : x
  2. Step 2: Convert to fraction form
    191,018.20/286,656.90 = 124,295.80/x
  3. Step 3: Cross multiply
    191,018.20x = 286,656.90 × 124,295.80
  4. Step 4: Simplify right side
    191,018.20x = 35,630,248,711.02
  5. Step 5: Solve for x
    x = 35,630,248,711.02/191,018.20
  6. Step 6: Final answer
    x = 186,528.03

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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.