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Finding the Fourth Proportional to 693,214.95, 956,619 and 387,293.63

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Solution

The fourth proportional to 693,214.95, 956,619 and 387,293.63 is: 534,455.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,214.95 : 956,619 = 387,293.63 : x
  2. Step 2: Convert to fraction form
    693,214.95/956,619 = 387,293.63/x
  3. Step 3: Cross multiply
    693,214.95x = 956,619 × 387,293.63
  4. Step 4: Simplify right side
    693,214.95x = 370,492,440,253.88
  5. Step 5: Solve for x
    x = 370,492,440,253.88/693,214.95
  6. Step 6: Final answer
    x = 534,455.35

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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.