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Finding the Fourth Proportional to 1,066,975.60, 1,603,962.60 and 753,602.80

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Solution

The fourth proportional to 1,066,975.60, 1,603,962.60 and 753,602.80 is: 1,132,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,066,975.60 : 1,603,962.60 = 753,602.80 : x
  2. Step 2: Convert to fraction form
    1,066,975.60/1,603,962.60 = 753,602.80/x
  3. Step 3: Cross multiply
    1,066,975.60x = 1,603,962.60 × 753,602.80
  4. Step 4: Simplify right side
    1,066,975.60x = 1,208,750,706,455.28
  5. Step 5: Solve for x
    x = 1,208,750,706,455.28/1,066,975.60
  6. Step 6: Final answer
    x = 1,132,875.68

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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.