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Finding the Fourth Proportional to 19,264,553.80, 28,896,830.70 and 12,877,865.80

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Solution

The fourth proportional to 19,264,553.80, 28,896,830.70 and 12,877,865.80 is: 19,316,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,264,553.80 : 28,896,830.70 = 12,877,865.80 : x
  2. Step 2: Convert to fraction form
    19,264,553.80/28,896,830.70 = 12,877,865.80/x
  3. Step 3: Cross multiply
    19,264,553.80x = 28,896,830.70 × 12,877,865.80
  4. Step 4: Simplify right side
    19,264,553.80x = 372,129,507,799,920.06
  5. Step 5: Solve for x
    x = 372,129,507,799,920.06/19,264,553.80
  6. Step 6: Final answer
    x = 19,316,798.70

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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.