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Finding the Fourth Proportional to 517,813.38, 714,803.40 and 348,145.92

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Solution

The fourth proportional to 517,813.38, 714,803.40 and 348,145.92 is: 480,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,813.38 : 714,803.40 = 348,145.92 : x
  2. Step 2: Convert to fraction form
    517,813.38/714,803.40 = 348,145.92/x
  3. Step 3: Cross multiply
    517,813.38x = 714,803.40 × 348,145.92
  4. Step 4: Simplify right side
    517,813.38x = 248,855,887,312.13
  5. Step 5: Solve for x
    x = 248,855,887,312.13/517,813.38
  6. Step 6: Final answer
    x = 480,589.91

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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.