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Finding the Fourth Proportional to 526,303.72, 726,303.22 and 290,564.94

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Solution

The fourth proportional to 526,303.72, 726,303.22 and 290,564.94 is: 400,981.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,303.72 : 726,303.22 = 290,564.94 : x
  2. Step 2: Convert to fraction form
    526,303.72/726,303.22 = 290,564.94/x
  3. Step 3: Cross multiply
    526,303.72x = 726,303.22 × 290,564.94
  4. Step 4: Simplify right side
    526,303.72x = 211,038,251,541.11
  5. Step 5: Solve for x
    x = 211,038,251,541.11/526,303.72
  6. Step 6: Final answer
    x = 400,981.87

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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.