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Finding the Fourth Proportional to 633,415.57, 874,113.60 and 346,945.91

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Solution

The fourth proportional to 633,415.57, 874,113.60 and 346,945.91 is: 478,785.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,415.57 : 874,113.60 = 346,945.91 : x
  2. Step 2: Convert to fraction form
    633,415.57/874,113.60 = 346,945.91/x
  3. Step 3: Cross multiply
    633,415.57x = 874,113.60 × 346,945.91
  4. Step 4: Simplify right side
    633,415.57x = 303,270,136,808.51
  5. Step 5: Solve for x
    x = 303,270,136,808.51/633,415.57
  6. Step 6: Final answer
    x = 478,785.42

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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.