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Finding the Fourth Proportional to 657,932,117.70, 986,898,176.55 and 554,619,987.30

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Solution

The fourth proportional to 657,932,117.70, 986,898,176.55 and 554,619,987.30 is: 831,929,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,932,117.70 : 986,898,176.55 = 554,619,987.30 : x
  2. Step 2: Convert to fraction form
    657,932,117.70/986,898,176.55 = 554,619,987.30/x
  3. Step 3: Cross multiply
    657,932,117.70x = 986,898,176.55 × 554,619,987.30
  4. Step 4: Simplify right side
    657,932,117.70x = 547,353,454,144,554,112
  5. Step 5: Solve for x
    x = 547,353,454,144,554,112/657,932,117.70
  6. Step 6: Final answer
    x = 831,929,980.95

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Double scale
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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.