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Finding the Fourth Proportional to 20,597,547.80, 30,896,321.70 and 11,527,621.40

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Solution

The fourth proportional to 20,597,547.80, 30,896,321.70 and 11,527,621.40 is: 17,291,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597,547.80 : 30,896,321.70 = 11,527,621.40 : x
  2. Step 2: Convert to fraction form
    20,597,547.80/30,896,321.70 = 11,527,621.40/x
  3. Step 3: Cross multiply
    20,597,547.80x = 30,896,321.70 × 11,527,621.40
  4. Step 4: Simplify right side
    20,597,547.80x = 356,161,099,210,204.38
  5. Step 5: Solve for x
    x = 356,161,099,210,204.38/20,597,547.80
  6. Step 6: Final answer
    x = 17,291,432.10

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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.