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Finding the Fourth Proportional to 66,586,572, 99,879,860.16 and 18,717,516

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Solution

The fourth proportional to 66,586,572, 99,879,860.16 and 18,717,516 is: 28,076,274.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,586,572 : 99,879,860.16 = 18,717,516 : x
  2. Step 2: Convert to fraction form
    66,586,572/99,879,860.16 = 18,717,516/x
  3. Step 3: Cross multiply
    66,586,572x = 99,879,860.16 × 18,717,516
  4. Step 4: Simplify right side
    66,586,572x = 1,869,502,880,622,562.50
  5. Step 5: Solve for x
    x = 1,869,502,880,622,562.50/66,586,572
  6. Step 6: Final answer
    x = 28,076,274.61

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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.