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Finding the Fourth Proportional to 1,185,557, 1,636,068.74 and 649,013

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Solution

The fourth proportional to 1,185,557, 1,636,068.74 and 649,013 is: 895,637.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,557 : 1,636,068.74 = 649,013 : x
  2. Step 2: Convert to fraction form
    1,185,557/1,636,068.74 = 649,013/x
  3. Step 3: Cross multiply
    1,185,557x = 1,636,068.74 × 649,013
  4. Step 4: Simplify right side
    1,185,557x = 1,061,829,881,153.62
  5. Step 5: Solve for x
    x = 1,061,829,881,153.62/1,185,557
  6. Step 6: Final answer
    x = 895,637.98

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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.