Home / 12,789,916.80-19,168,545.60-5,208,316.80

Finding the Fourth Proportional to 12,789,916.80, 19,168,545.60 and 5,208,316.80

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Solution

The fourth proportional to 12,789,916.80, 19,168,545.60 and 5,208,316.80 is: 7,805,825.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789,916.80 : 19,168,545.60 = 5,208,316.80 : x
  2. Step 2: Convert to fraction form
    12,789,916.80/19,168,545.60 = 5,208,316.80/x
  3. Step 3: Cross multiply
    12,789,916.80x = 19,168,545.60 × 5,208,316.80
  4. Step 4: Simplify right side
    12,789,916.80x = 99,835,858,080,046.08
  5. Step 5: Solve for x
    x = 99,835,858,080,046.08/12,789,916.80
  6. Step 6: Final answer
    x = 7,805,825.45

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1.5x scale

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.