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Finding the Fourth Proportional to 582,684,368.40, 874,026,552.60 and 399,018,358.80

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Solution

The fourth proportional to 582,684,368.40, 874,026,552.60 and 399,018,358.80 is: 598,527,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,684,368.40 : 874,026,552.60 = 399,018,358.80 : x
  2. Step 2: Convert to fraction form
    582,684,368.40/874,026,552.60 = 399,018,358.80/x
  3. Step 3: Cross multiply
    582,684,368.40x = 874,026,552.60 × 399,018,358.80
  4. Step 4: Simplify right side
    582,684,368.40x = 348,752,640,566,073,920
  5. Step 5: Solve for x
    x = 348,752,640,566,073,920/582,684,368.40
  6. Step 6: Final answer
    x = 598,527,538.20

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Similar ratio
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1.5x scale

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.