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Finding the Fourth Proportional to 348,643.80, 521,981.55 and 338,802.30

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Solution

The fourth proportional to 348,643.80, 521,981.55 and 338,802.30 is: 507,247.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,643.80 : 521,981.55 = 338,802.30 : x
  2. Step 2: Convert to fraction form
    348,643.80/521,981.55 = 338,802.30/x
  3. Step 3: Cross multiply
    348,643.80x = 521,981.55 × 338,802.30
  4. Step 4: Simplify right side
    348,643.80x = 176,848,549,697.57
  5. Step 5: Solve for x
    x = 176,848,549,697.57/348,643.80
  6. Step 6: Final answer
    x = 507,247.08

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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.