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Finding the Fourth Proportional to 620,984.16, 856,456.92 and 416,973.60

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Solution

The fourth proportional to 620,984.16, 856,456.92 and 416,973.60 is: 575,087.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,984.16 : 856,456.92 = 416,973.60 : x
  2. Step 2: Convert to fraction form
    620,984.16/856,456.92 = 416,973.60/x
  3. Step 3: Cross multiply
    620,984.16x = 856,456.92 × 416,973.60
  4. Step 4: Simplify right side
    620,984.16x = 357,119,925,177.31
  5. Step 5: Solve for x
    x = 357,119,925,177.31/620,984.16
  6. Step 6: Final answer
    x = 575,087.01

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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.