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Finding the Fourth Proportional to 712,941.48, 983,859.48 and 390,648.96

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Solution

The fourth proportional to 712,941.48, 983,859.48 and 390,648.96 is: 539,095.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,941.48 : 983,859.48 = 390,648.96 : x
  2. Step 2: Convert to fraction form
    712,941.48/983,859.48 = 390,648.96/x
  3. Step 3: Cross multiply
    712,941.48x = 983,859.48 × 390,648.96
  4. Step 4: Simplify right side
    712,941.48x = 384,343,682,648.14
  5. Step 5: Solve for x
    x = 384,343,682,648.14/712,941.48
  6. Step 6: Final answer
    x = 539,095.69

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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.