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Finding the Fourth Proportional to 612,683.44, 845,378.16 and 357,985.36

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Solution

The fourth proportional to 612,683.44, 845,378.16 and 357,985.36 is: 493,946.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,683.44 : 845,378.16 = 357,985.36 : x
  2. Step 2: Convert to fraction form
    612,683.44/845,378.16 = 357,985.36/x
  3. Step 3: Cross multiply
    612,683.44x = 845,378.16 × 357,985.36
  4. Step 4: Simplify right side
    612,683.44x = 302,633,004,943.74
  5. Step 5: Solve for x
    x = 302,633,004,943.74/612,683.44
  6. Step 6: Final answer
    x = 493,946.77

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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.