Home / 66,513,907.60-99,696,211.80-28,168,896.40

Finding the Fourth Proportional to 66,513,907.60, 99,696,211.80 and 28,168,896.40

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Solution

The fourth proportional to 66,513,907.60, 99,696,211.80 and 28,168,896.40 is: 42,221,730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,513,907.60 : 99,696,211.80 = 28,168,896.40 : x
  2. Step 2: Convert to fraction form
    66,513,907.60/99,696,211.80 = 28,168,896.40/x
  3. Step 3: Cross multiply
    66,513,907.60x = 99,696,211.80 × 28,168,896.40
  4. Step 4: Simplify right side
    66,513,907.60x = 2,808,332,261,666,657.50
  5. Step 5: Solve for x
    x = 2,808,332,261,666,657.50/66,513,907.60
  6. Step 6: Final answer
    x = 42,221,730.21

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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.