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Finding the Fourth Proportional to 10,959,905.40, 15,369,061.80 and 10,959,905.40

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Solution

The fourth proportional to 10,959,905.40, 15,369,061.80 and 10,959,905.40 is: 15,369,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959,905.40 : 15,369,061.80 = 10,959,905.40 : x
  2. Step 2: Convert to fraction form
    10,959,905.40/15,369,061.80 = 10,959,905.40/x
  3. Step 3: Cross multiply
    10,959,905.40x = 15,369,061.80 × 10,959,905.40
  4. Step 4: Simplify right side
    10,959,905.40x = 168,443,463,414,753.72
  5. Step 5: Solve for x
    x = 168,443,463,414,753.72/10,959,905.40
  6. Step 6: Final answer
    x = 15,369,061.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.