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Finding the Fourth Proportional to 280,365.77, 386,904.60 and 153,041.33

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Solution

The fourth proportional to 280,365.77, 386,904.60 and 153,041.33 is: 211,196.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,365.77 : 386,904.60 = 153,041.33 : x
  2. Step 2: Convert to fraction form
    280,365.77/386,904.60 = 153,041.33/x
  3. Step 3: Cross multiply
    280,365.77x = 386,904.60 × 153,041.33
  4. Step 4: Simplify right side
    280,365.77x = 59,212,394,567.12
  5. Step 5: Solve for x
    x = 59,212,394,567.12/280,365.77
  6. Step 6: Final answer
    x = 211,196.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.