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Finding the Fourth Proportional to 171,648,442.40, 257,472,663.60 and 42,255,024.80

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Solution

The fourth proportional to 171,648,442.40, 257,472,663.60 and 42,255,024.80 is: 63,382,537.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,648,442.40 : 257,472,663.60 = 42,255,024.80 : x
  2. Step 2: Convert to fraction form
    171,648,442.40/257,472,663.60 = 42,255,024.80/x
  3. Step 3: Cross multiply
    171,648,442.40x = 257,472,663.60 × 42,255,024.80
  4. Step 4: Simplify right side
    171,648,442.40x = 10,879,513,785,740,056
  5. Step 5: Solve for x
    x = 10,879,513,785,740,056/171,648,442.40
  6. Step 6: Final answer
    x = 63,382,537.20

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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.