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Finding the Fourth Proportional to 877,810.50, 1,211,477.11 and 495,861.89

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Solution

The fourth proportional to 877,810.50, 1,211,477.11 and 495,861.89 is: 684,345.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,810.50 : 1,211,477.11 = 495,861.89 : x
  2. Step 2: Convert to fraction form
    877,810.50/1,211,477.11 = 495,861.89/x
  3. Step 3: Cross multiply
    877,810.50x = 1,211,477.11 × 495,861.89
  4. Step 4: Simplify right side
    877,810.50x = 600,725,322,159.30
  5. Step 5: Solve for x
    x = 600,725,322,159.30/877,810.50
  6. Step 6: Final answer
    x = 684,345.11

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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.