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Finding the Fourth Proportional to 680,666.32, 937,293.72 and 665,561.98

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Solution

The fourth proportional to 680,666.32, 937,293.72 and 665,561.98 is: 916,494.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,666.32 : 937,293.72 = 665,561.98 : x
  2. Step 2: Convert to fraction form
    680,666.32/937,293.72 = 665,561.98/x
  3. Step 3: Cross multiply
    680,666.32x = 937,293.72 × 665,561.98
  4. Step 4: Simplify right side
    680,666.32x = 623,827,064,124.77
  5. Step 5: Solve for x
    x = 623,827,064,124.77/680,666.32
  6. Step 6: Final answer
    x = 916,494.68

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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.