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Finding the Fourth Proportional to 1,235,778,726.95, 1,703,751,874.66 and 891,772,211.60

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Solution

The fourth proportional to 1,235,778,726.95, 1,703,751,874.66 and 891,772,211.60 is: 1,229,474,617.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,778,726.95 : 1,703,751,874.66 = 891,772,211.60 : x
  2. Step 2: Convert to fraction form
    1,235,778,726.95/1,703,751,874.66 = 891,772,211.60/x
  3. Step 3: Cross multiply
    1,235,778,726.95x = 1,703,751,874.66 × 891,772,211.60
  4. Step 4: Simplify right side
    1,235,778,726.95x = 1,519,358,577,283,194,368
  5. Step 5: Solve for x
    x = 1,519,358,577,283,194,368/1,235,778,726.95
  6. Step 6: Final answer
    x = 1,229,474,617.22

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Double scale
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1.5x scale

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.