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Finding the Fourth Proportional to 674,197.83, 930,580.65 and 387,810.18

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Solution

The fourth proportional to 674,197.83, 930,580.65 and 387,810.18 is: 535,285.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,197.83 : 930,580.65 = 387,810.18 : x
  2. Step 2: Convert to fraction form
    674,197.83/930,580.65 = 387,810.18/x
  3. Step 3: Cross multiply
    674,197.83x = 930,580.65 × 387,810.18
  4. Step 4: Simplify right side
    674,197.83x = 360,888,649,381.02
  5. Step 5: Solve for x
    x = 360,888,649,381.02/674,197.83
  6. Step 6: Final answer
    x = 535,285.98

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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.