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Finding the Fourth Proportional to 18,684,927.30, 28,038,458.78 and 7,901,637.06

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Solution

The fourth proportional to 18,684,927.30, 28,038,458.78 and 7,901,637.06 is: 11,857,136.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,927.30 : 28,038,458.78 = 7,901,637.06 : x
  2. Step 2: Convert to fraction form
    18,684,927.30/28,038,458.78 = 7,901,637.06/x
  3. Step 3: Cross multiply
    18,684,927.30x = 28,038,458.78 × 7,901,637.06
  4. Step 4: Simplify right side
    18,684,927.30x = 221,549,725,001,330.38
  5. Step 5: Solve for x
    x = 221,549,725,001,330.38/18,684,927.30
  6. Step 6: Final answer
    x = 11,857,136.05

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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.