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Finding the Fourth Proportional to 191,861.70, 287,875.46 and 103,011.45

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Solution

The fourth proportional to 191,861.70, 287,875.46 and 103,011.45 is: 154,561.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,861.70 : 287,875.46 = 103,011.45 : x
  2. Step 2: Convert to fraction form
    191,861.70/287,875.46 = 103,011.45/x
  3. Step 3: Cross multiply
    191,861.70x = 287,875.46 × 103,011.45
  4. Step 4: Simplify right side
    191,861.70x = 29,654,468,038.96
  5. Step 5: Solve for x
    x = 29,654,468,038.96/191,861.70
  6. Step 6: Final answer
    x = 154,561.69

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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.