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Finding the Fourth Proportional to 53,281,476.20, 74,669,649.40 and 53,281,476.20

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Solution

The fourth proportional to 53,281,476.20, 74,669,649.40 and 53,281,476.20 is: 74,669,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,281,476.20 : 74,669,649.40 = 53,281,476.20 : x
  2. Step 2: Convert to fraction form
    53,281,476.20/74,669,649.40 = 53,281,476.20/x
  3. Step 3: Cross multiply
    53,281,476.20x = 74,669,649.40 × 53,281,476.20
  4. Step 4: Simplify right side
    53,281,476.20x = 3,978,509,147,368,445
  5. Step 5: Solve for x
    x = 3,978,509,147,368,445/53,281,476.20
  6. Step 6: Final answer
    x = 74,669,649.40

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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.