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Finding the Fourth Proportional to 883,136.32, 1,218,887.16 and 520,539.01

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Solution

The fourth proportional to 883,136.32, 1,218,887.16 and 520,539.01 is: 718,437.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,136.32 : 1,218,887.16 = 520,539.01 : x
  2. Step 2: Convert to fraction form
    883,136.32/1,218,887.16 = 520,539.01/x
  3. Step 3: Cross multiply
    883,136.32x = 1,218,887.16 × 520,539.01
  4. Step 4: Simplify right side
    883,136.32x = 634,478,309,473.68
  5. Step 5: Solve for x
    x = 634,478,309,473.68/883,136.32
  6. Step 6: Final answer
    x = 718,437.57

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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.