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Finding the Fourth Proportional to 1,159,428.60, 1,570,205.25 and 1,159,428.60

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Solution

The fourth proportional to 1,159,428.60, 1,570,205.25 and 1,159,428.60 is: 1,570,205.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,428.60 : 1,570,205.25 = 1,159,428.60 : x
  2. Step 2: Convert to fraction form
    1,159,428.60/1,570,205.25 = 1,159,428.60/x
  3. Step 3: Cross multiply
    1,159,428.60x = 1,570,205.25 × 1,159,428.60
  4. Step 4: Simplify right side
    1,159,428.60x = 1,820,540,874,720.15
  5. Step 5: Solve for x
    x = 1,820,540,874,720.15/1,159,428.60
  6. Step 6: Final answer
    x = 1,570,205.25

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.