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Finding the Fourth Proportional to 572,367.61, 789,827.79 and 317,698.75

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Solution

The fourth proportional to 572,367.61, 789,827.79 and 317,698.75 is: 438,402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,367.61 : 789,827.79 = 317,698.75 : x
  2. Step 2: Convert to fraction form
    572,367.61/789,827.79 = 317,698.75/x
  3. Step 3: Cross multiply
    572,367.61x = 789,827.79 × 317,698.75
  4. Step 4: Simplify right side
    572,367.61x = 250,927,301,598.26
  5. Step 5: Solve for x
    x = 250,927,301,598.26/572,367.61
  6. Step 6: Final answer
    x = 438,402.34

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Double scale
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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.