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Finding the Fourth Proportional to 578,899,252.80, 812,608,862.40 and 578,899,252.80

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Solution

The fourth proportional to 578,899,252.80, 812,608,862.40 and 578,899,252.80 is: 812,608,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,899,252.80 : 812,608,862.40 = 578,899,252.80 : x
  2. Step 2: Convert to fraction form
    578,899,252.80/812,608,862.40 = 578,899,252.80/x
  3. Step 3: Cross multiply
    578,899,252.80x = 812,608,862.40 × 578,899,252.80
  4. Step 4: Simplify right side
    578,899,252.80x = 470,418,663,262,017,984
  5. Step 5: Solve for x
    x = 470,418,663,262,017,984/578,899,252.80
  6. Step 6: Final answer
    x = 812,608,862.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.