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Finding the Fourth Proportional to 21,581,287.70, 32,371,931.55 and 21,581,287.70

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Solution

The fourth proportional to 21,581,287.70, 32,371,931.55 and 21,581,287.70 is: 32,371,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581,287.70 : 32,371,931.55 = 21,581,287.70 : x
  2. Step 2: Convert to fraction form
    21,581,287.70/32,371,931.55 = 21,581,287.70/x
  3. Step 3: Cross multiply
    21,581,287.70x = 32,371,931.55 × 21,581,287.70
  4. Step 4: Simplify right side
    21,581,287.70x = 698,627,968,185,256.88
  5. Step 5: Solve for x
    x = 698,627,968,185,256.88/21,581,287.70
  6. Step 6: Final answer
    x = 32,371,931.55

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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.