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Finding the Fourth Proportional to 691,172.96, 953,703.04 and 385,182.32

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Solution

The fourth proportional to 691,172.96, 953,703.04 and 385,182.32 is: 531,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,172.96 : 953,703.04 = 385,182.32 : x
  2. Step 2: Convert to fraction form
    691,172.96/953,703.04 = 385,182.32/x
  3. Step 3: Cross multiply
    691,172.96x = 953,703.04 × 385,182.32
  4. Step 4: Simplify right side
    691,172.96x = 367,349,549,538.25
  5. Step 5: Solve for x
    x = 367,349,549,538.25/691,172.96
  6. Step 6: Final answer
    x = 531,487.15

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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.