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Finding the Fourth Proportional to 989,646,140.16, 1,365,630,363 and 543,586,451.22

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Solution

The fourth proportional to 989,646,140.16, 1,365,630,363 and 543,586,451.22 is: 750,104,641.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,646,140.16 : 1,365,630,363 = 543,586,451.22 : x
  2. Step 2: Convert to fraction form
    989,646,140.16/1,365,630,363 = 543,586,451.22/x
  3. Step 3: Cross multiply
    989,646,140.16x = 1,365,630,363 × 543,586,451.22
  4. Step 4: Simplify right side
    989,646,140.16x = 742,338,162,701,450,368
  5. Step 5: Solve for x
    x = 742,338,162,701,450,368/989,646,140.16
  6. Step 6: Final answer
    x = 750,104,641.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.