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Finding the Fourth Proportional to 661,153.38, 912,410.91 and 374,663.94

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Solution

The fourth proportional to 661,153.38, 912,410.91 and 374,663.94 is: 517,047.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,153.38 : 912,410.91 = 374,663.94 : x
  2. Step 2: Convert to fraction form
    661,153.38/912,410.91 = 374,663.94/x
  3. Step 3: Cross multiply
    661,153.38x = 912,410.91 × 374,663.94
  4. Step 4: Simplify right side
    661,153.38x = 341,847,466,439.59
  5. Step 5: Solve for x
    x = 341,847,466,439.59/661,153.38
  6. Step 6: Final answer
    x = 517,047.14

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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.