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Finding the Fourth Proportional to 917,369.60, 1,375,509.24 and 348,792.30

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Solution

The fourth proportional to 917,369.60, 1,375,509.24 and 348,792.30 is: 522,981.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,369.60 : 1,375,509.24 = 348,792.30 : x
  2. Step 2: Convert to fraction form
    917,369.60/1,375,509.24 = 348,792.30/x
  3. Step 3: Cross multiply
    917,369.60x = 1,375,509.24 × 348,792.30
  4. Step 4: Simplify right side
    917,369.60x = 479,767,031,490.85
  5. Step 5: Solve for x
    x = 479,767,031,490.85/917,369.60
  6. Step 6: Final answer
    x = 522,981.18

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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.