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Finding the Fourth Proportional to 693,214.76, 956,618.75 and 387,293.45

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Solution

The fourth proportional to 693,214.76, 956,618.75 and 387,293.45 is: 534,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,214.76 : 956,618.75 = 387,293.45 : x
  2. Step 2: Convert to fraction form
    693,214.76/956,618.75 = 387,293.45/x
  3. Step 3: Cross multiply
    693,214.76x = 956,618.75 × 387,293.45
  4. Step 4: Simplify right side
    693,214.76x = 370,492,169,302.63
  5. Step 5: Solve for x
    x = 370,492,169,302.63/693,214.76
  6. Step 6: Final answer
    x = 534,455.11

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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.