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Finding the Fourth Proportional to 884,312.16, 1,219,483.82 and 561,461.76

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Solution

The fourth proportional to 884,312.16, 1,219,483.82 and 561,461.76 is: 774,266.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,312.16 : 1,219,483.82 = 561,461.76 : x
  2. Step 2: Convert to fraction form
    884,312.16/1,219,483.82 = 561,461.76/x
  3. Step 3: Cross multiply
    884,312.16x = 1,219,483.82 × 561,461.76
  4. Step 4: Simplify right side
    884,312.16x = 684,693,531,868.72
  5. Step 5: Solve for x
    x = 684,693,531,868.72/884,312.16
  6. Step 6: Final answer
    x = 774,266.78

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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.