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Finding the Fourth Proportional to 1,152,978.60, 1,724,802.30 and 1,013,010.60

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Solution

The fourth proportional to 1,152,978.60, 1,724,802.30 and 1,013,010.60 is: 1,515,416.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,978.60 : 1,724,802.30 = 1,013,010.60 : x
  2. Step 2: Convert to fraction form
    1,152,978.60/1,724,802.30 = 1,013,010.60/x
  3. Step 3: Cross multiply
    1,152,978.60x = 1,724,802.30 × 1,013,010.60
  4. Step 4: Simplify right side
    1,152,978.60x = 1,747,243,012,804.38
  5. Step 5: Solve for x
    x = 1,747,243,012,804.38/1,152,978.60
  6. Step 6: Final answer
    x = 1,515,416.69

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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.