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Finding the Fourth Proportional to 578,130.21, 866,896.53 and 253,785.57

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Solution

The fourth proportional to 578,130.21, 866,896.53 and 253,785.57 is: 380,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,130.21 : 866,896.53 = 253,785.57 : x
  2. Step 2: Convert to fraction form
    578,130.21/866,896.53 = 253,785.57/x
  3. Step 3: Cross multiply
    578,130.21x = 866,896.53 × 253,785.57
  4. Step 4: Simplify right side
    578,130.21x = 220,005,829,997.07
  5. Step 5: Solve for x
    x = 220,005,829,997.07/578,130.21
  6. Step 6: Final answer
    x = 380,547.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.