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Finding the Fourth Proportional to 366,931.65, 550,397.48 and 260,643.45

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Solution

The fourth proportional to 366,931.65, 550,397.48 and 260,643.45 is: 390,965.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,931.65 : 550,397.48 = 260,643.45 : x
  2. Step 2: Convert to fraction form
    366,931.65/550,397.48 = 260,643.45/x
  3. Step 3: Cross multiply
    366,931.65x = 550,397.48 × 260,643.45
  4. Step 4: Simplify right side
    366,931.65x = 143,457,496,755.29
  5. Step 5: Solve for x
    x = 143,457,496,755.29/366,931.65
  6. Step 6: Final answer
    x = 390,965.18

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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.