Home / 28,191,141.60-42,286,712.40-19,688,085.60

Finding the Fourth Proportional to 28,191,141.60, 42,286,712.40 and 19,688,085.60

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Solution

The fourth proportional to 28,191,141.60, 42,286,712.40 and 19,688,085.60 is: 29,532,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191,141.60 : 42,286,712.40 = 19,688,085.60 : x
  2. Step 2: Convert to fraction form
    28,191,141.60/42,286,712.40 = 19,688,085.60/x
  3. Step 3: Cross multiply
    28,191,141.60x = 42,286,712.40 × 19,688,085.60
  4. Step 4: Simplify right side
    28,191,141.60x = 832,544,413,473,781.50
  5. Step 5: Solve for x
    x = 832,544,413,473,781.50/28,191,141.60
  6. Step 6: Final answer
    x = 29,532,128.40

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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.