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Finding the Fourth Proportional to 15,175,903.40, 21,294,094.45 and 15,175,903.40

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Solution

The fourth proportional to 15,175,903.40, 21,294,094.45 and 15,175,903.40 is: 21,294,094.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175,903.40 : 21,294,094.45 = 15,175,903.40 : x
  2. Step 2: Convert to fraction form
    15,175,903.40/21,294,094.45 = 15,175,903.40/x
  3. Step 3: Cross multiply
    15,175,903.40x = 21,294,094.45 × 15,175,903.40
  4. Step 4: Simplify right side
    15,175,903.40x = 323,157,120,363,676.12
  5. Step 5: Solve for x
    x = 323,157,120,363,676.12/15,175,903.40
  6. Step 6: Final answer
    x = 21,294,094.45

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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.