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Finding the Fourth Proportional to 865,780.96, 1,194,775.80 and 483,807.78

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Solution

The fourth proportional to 865,780.96, 1,194,775.80 and 483,807.78 is: 667,653.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,780.96 : 1,194,775.80 = 483,807.78 : x
  2. Step 2: Convert to fraction form
    865,780.96/1,194,775.80 = 483,807.78/x
  3. Step 3: Cross multiply
    865,780.96x = 1,194,775.80 × 483,807.78
  4. Step 4: Simplify right side
    865,780.96x = 578,041,827,395.72
  5. Step 5: Solve for x
    x = 578,041,827,395.72/865,780.96
  6. Step 6: Final answer
    x = 667,653.66

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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.