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Finding the Fourth Proportional to 10,515,164.40, 14,742,487.80 and 10,515,164.40

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Solution

The fourth proportional to 10,515,164.40, 14,742,487.80 and 10,515,164.40 is: 14,742,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515,164.40 : 14,742,487.80 = 10,515,164.40 : x
  2. Step 2: Convert to fraction form
    10,515,164.40/14,742,487.80 = 10,515,164.40/x
  3. Step 3: Cross multiply
    10,515,164.40x = 14,742,487.80 × 10,515,164.40
  4. Step 4: Simplify right side
    10,515,164.40x = 155,019,682,881,994.34
  5. Step 5: Solve for x
    x = 155,019,682,881,994.34/10,515,164.40
  6. Step 6: Final answer
    x = 14,742,487.80

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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.